The pattern repeat is only 8 rows, and is super easy to memorize. You can make it bigger (or smaller) by adding stitches in any multiple of 8.

Knitted in a multiple of 8, + 4 sts and 8-row repeat.
Row 1 -Right side: K4, * k2tog, ssk, k4; repeat from * to end.
Row 2 and all wrong side rows: Purl all stitches.
Row 3: K4, * k1long, k2, k1long (through the same space), k4; repeat from * to end.
Row 5: K2tog, ssk, * k4, k2tog, ssk; repeat from * to end.
Row 7: K1long, k2, k1long (through the same space), * k4, k1long, k2, k1long (through the same space); repeat from * to end.
Row 8: Purl all stitches.

Knitting abbreviations:
Knit: K | Purl: P | Knit 2 sts together: K2tog | Slip slip knit: Ssk.
How to knit: K1long
- Insert your right needle into the space between the k2tog and ssk from 2 rows earlier.
- Knit one stitch through this hole.
Note: Try to keep your tension even on both stitches so that they will be of equal length.