Shown with a cast-on count of 1 stitch.  

• Round 1: K1.
• Rounds 2, 4, 6, 8, 10, 12, 14, and 16: Knit.
• Round 3: 1-To-9 inc (9 sts).
• Round 5: Yo, k3, k2tog, k4, yo (10 sts).
• Round 7: Yo, k10, yo (12 sts).
• Round 9: Ssk, k2tog, yo, yo, ssk, k2tog, yo, yo, ssk, k2tog (10 sts).
• Round 11: Ssk, k1, k2tog, yo, yo, ssk, k1, k2tog (8 sts).
• Round 13: Ssk, k4, k2tog (6 sts).
• Round 15: Ssk, k2, k2tog (4 sts).
• Round 17: Ssk, k2tog (2 sts).