Old Western triangle

Set up: CO 3 sts and increase to 15 after first working 2 rows: K1, p1, k1. Increase rows: 1) K1, yo, p1, yo, k1; 2) K2, p1, k2; 3) K2, yo, p1, yo, k2; 4) K2, p3, k2; 5) K2, yo, k1, p1, k1, yo, k2;
6) K2, p5, k2; 7) K2, yo, k2, p1, k2, yo, k2; 8) K2, p7, k2; 9) K2, yo, k3, p1, k3, yo, k2; 10) K2, p9, k2; 11) K2, yo, k4, p1, …

Set up: CO 3 sts and increase to 15 after first working 2 rows: K1, p1, k1. Increase rows: 1) K1, yo, p1, yo, k1; 2) K2, p1, k2; 3) K2, yo, p1, yo, k2; 4) K2, p3, k2; 5) K2, yo, k1, p1, k1, yo, k2;
6) K2, p5, k2; 7) K2, yo, k2, p1, k2, yo, k2; 8) K2, p7, k2; 9) K2, yo, k3, p1, k3, yo, k2; 10) K2, p9, k2; 11) K2, yo, k4, p1, k4, yo, k2 (15 sts)

Continue borders as established (K2, yo ….. yo, k2) on RS rows. On WS rows, K2, purl to last to sts, K2, if preferred. Work additional 20-row sections by increasing bracketed repetitions as required.

Shown with a cast-on count of 15 stitches.   Getting chart...

  • Row 1 (RS): K2, yo, k1, yo, k2, k2tog, yo, p1, yo, ssk, k2, yo, k1, yo, k2 (19 sts).
  • Rows 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, and 40: Purl.
  • Row 3: K2, yo, k1, yo, k2, k2tog, k2, yo, p1, yo, k2, ssk, k2, yo, k1, yo, k2 (23 sts).
  • Row 5: K2, yo, k1, yo, k2, k2tog, k4, yo, p1, yo, k4, ssk, k2, yo, k1, yo, k2 (27 sts).
  • Row 7: K2, yo, [k1, yo, k2, k2tog] twice, k1, yo, p1, yo, k1, [ssk, k2, yo, k1] twice, yo, k2 (31 sts).
  • Row 9: K2, yo, [k1, yo, k2, k2tog] twice, k3, yo, p1, yo, k3, [ssk, k2, yo, k1] twice, yo, k2 (35 sts).
  • Row 11: K2, yo, [k1, yo, k2, k2tog] 3 times, yo, p1, yo, [ssk, k2, yo, k1] 3 times, yo, k2 (39 sts).
  • Row 13: K2, yo, k2, [k1, yo, k2, k2tog] 3 times, yo, p1, yo, [ssk, k2, yo, k1] 3 times, k2, yo, k2 (43 sts).
  • Row 15: K2, yo, k4, [k1, yo, k2, k2tog] 3 times, yo, p1, yo, [ssk, k2, yo, k1] 3 times, k4, yo, k2 (47 sts).
  • Row 17: K2, yo, k1, [k1, yo, k2, k2tog] 4 times, yo, p1, yo, [ssk, k2, yo, k1] 4 times, k1, yo, k2 (51 sts).
  • Row 19: K2, yo, k3, [k1, yo, k2, k2tog] 4 times, yo, p1, yo, [ssk, k2, yo, k1] 4 times, k3, yo, k2 (55 sts).
  • Row 21: K2, yo, [k1, yo, k2, k2tog] 5 times, yo, p1, yo, [ssk, k2, yo, k1] 5 times, yo, k2 (59 sts).
  • Row 23: K2, yo, [k1, yo, k2, k2tog] 5 times, k2, yo, p1, yo, k2, [ssk, k2, yo, k1] 5 times, yo, k2 (63 sts).
  • Row 25: K2, yo, [k1, yo, k2, k2tog] 5 times, k4, yo, p1, yo, k4, [ssk, k2, yo, k1] 5 times, yo, k2 (67 sts).
  • Row 27: K2, yo, [k1, yo, k2, k2tog] 6 times, k1, yo, p1, yo, k1, [ssk, k2, yo, k1] 6 times, yo, k2 (71 sts).
  • Row 29: K2, yo, [k1, yo, k2, k2tog] 6 times, k3, yo, p1, yo, k3, [ssk, k2, yo, k1] 6 times, yo, k2 (75 sts).
  • Row 31: K2, yo, [k1, yo, k2, k2tog] 7 times, yo, p1, yo, [ssk, k2, yo, k1] 7 times, yo, k2 (79 sts).
  • Row 33: K2, yo, k2, [k1, yo, k2, k2tog] 7 times, yo, p1, yo, [ssk, k2, yo, k1] 7 times, k2, yo, k2 (83 sts).
  • Row 35: K2, yo, k4, [k1, yo, k2, k2tog] 7 times, yo, p1, yo, [ssk, k2, yo, k1] 7 times, k4, yo, k2 (87 sts).
  • Row 37: K2, yo, k1, [k1, yo, k2, k2tog] 8 times, yo, p1, yo, [ssk, k2, yo, k1] 8 times, k1, yo, k2 (91 sts).
  • Row 39: K2, yo, k3, [k1, yo, k2, k2tog] 8 times, yo, p1, yo, [ssk, k2, yo, k1] 8 times, k3, yo, k2 (95 sts).