Shown with a cast-on count of 1 stitch.  

• Row 1 (RS): K1.
• Row 2: Kfb (2 sts).
• Row 3: Kfb, knit (3 sts).
• Row 4: Kfb, knit (4 sts).
• Row 5: Kfb, knit to last st, kfb (6 sts).
• Row 6: Kfb, knit to last st, kfb (8 sts).
• Row 7: Kfb, knit (9 sts).
• Row 8: Kfb, knit (10 sts).
• Row 9: Kfb, knit (11 sts).
• Row 10: Kfb, knit (12 sts).
• Row 11: Kfb, knit (13 sts).
• Row 12: Kfb, knit (14 sts).
• Row 13: Kfb, knit (15 sts).
• Row 14: Kfb, knit (16 sts).
• Row 15: Kfb, knit (17 sts).
• Row 16: Kfb, knit (18 sts).
• Row 17: Kfb, knit (19 sts).
• Row 18: Kfb, knit (20 sts).
• Rows 19, 21, and 23: Knit.
• Rows 20 and 22: Knit.