Shown with a cast-on count of 36 stitches.  

• Round 1: K36.
• Round 2: *K1, incR, k16, incL, k1, repeat from * (40 sts).
• Round 3: *K1, incR, k18, incL, k1, repeat from * (44 sts).
• Rounds 4, 6, 8, 10, 12-13, and 15-16: Knit.
• Round 5: *K1, incR, k20, incL, k1, repeat from * (48 sts).
• Round 7: *K1, incR, k22, incL, k1, repeat from * (52 sts).
• Round 9: *K1, incR, k24, incL, k1, repeat from * (56 sts).
• Round 11: *K1, incR, k26, incL, k1, repeat from * (60 sts).
• Round 14: *K1, incR, k28, incL, k1, repeat from * (64 sts).
• Round 17: *K1, incR, k30, incL, k1, repeat from * (68 sts).