Shown with a cast-on count of 3 stitches.  

• Row 1 (RS): K3.
• Row 2: K1, incR, knit to last st, incL, k1 (5 sts).
• Row 3: K1, incR, sl2-k1-p2sso, incL, k1.
• Row 4: K1, incR, knit to last st, incL, k1 (7 sts).
• Row 5: K1, incR, k1, sl2-k1-p2sso, k1, incL, k1.
• Row 6: K1, incR, knit to last st, incL, k1 (9 sts).
• Row 7: K1, incR, k2, sl2-k1-p2sso, k2, incL, k1.
• Row 8: K1, incR, knit to last st, incL, k1 (11 sts).
• Row 9: K1, incR, k3, sl2-k1-p2sso, k3, incL, k1.
• Row 10: K1, incR, knit to last st, incL, k1 (13 sts).
• Row 11: K1, incR, k4, sl2-k1-p2sso, k4, incL, k1.
• Row 12: K1, incR, knit to last st, incL, k1 (15 sts).
• Row 13: K1, incR, k5, sl2-k1-p2sso, k5, incL, k1.
• Row 14: K1, incR, knit to last st, incL, k1 (17 sts).
• Row 15: K1, incR, k6, sl2-k1-p2sso, k6, incL, k1.
• Row 16: K1, incR, knit to last st, incL, k1 (19 sts).
• Row 17: K1, incR, k7, sl2-k1-p2sso, k7, incL, k1.
• Row 18: K1, incR, knit to last st, incL, k1 (21 sts).
• Row 19: K1, incR, k8, sl2-k1-p2sso, k8, incL, k1.
• Row 20: K1, incR, knit to last st, incL, k1 (23 sts).