Armhole math

Shown with a cast-on count of 56 stitches.   Getting chart...

  • Rows 1, 3, and 5 (RS): K3tog, knit to last 3 sts, sl1-k2tog-psso (4 fewer sts).
  • Rows 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, and 60: Purl.
  • Rows 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 35, 39, 43, 47, 51, 55, and 59: K2tog, knit to last 2 sts, ssk (2 fewer sts).
  • Rows 33, 37, 41, 45, 49, 53, and 57: Knit.