Shown with a cast-on count of 2 stitches.  

• Round 1: Knit.
• Round 2: *Yo, k1, repeat from * (multiple of 2 sts).
• Round 3: *P1 tbl, p1, repeat from *.
• Round 4: *K1, yo, k1, repeat from * (multiple of 3 sts).
• Round 5: *P1, k1 tbl, p1, repeat from *.
• Round 6: *K1, yo, k1, yo, k1, repeat from * (multiple of 5 sts).
• Round 7: *P1, k1 tbl, k1, k1 tbl, p1, repeat from *.
• Round 8: *K2, yo, k1, yo, k2, repeat from * (multiple of 7 sts).
• Round 9: *P2, k3, p2, repeat from *.
• Round 10: *K3, yo, k1, yo, k3, repeat from * (multiple of 9 sts).
• Round 11: *P2, k5, p2, repeat from *.
• Round 12: *K4, yo, k1, yo, k4, repeat from * (multiple of 11 sts).
• Round 13: *P2, k7, p2, repeat from *.
• Round 14: *K5, yo, k1, yo, k5, repeat from * (multiple of 13 sts).
• Round 15: *P2, k9, p2, repeat from *.
• Round 16: *K6, yo, k1, yo, k6, repeat from * (multiple of 15 sts).
• Round 17: *P2, k11, p2, repeat from *.
• Round 18: *K1, ssk, k4, yo, k1, yo, k4, k2tog, k1, repeat from *.