These socks feature four “constant cables,” representing four mathematical constants: pi, e, phi (the Golden Ratio), and the Ramanujan-Soldner constant. The cables encode these constants in the number of stitches in the cable and the number of plain rounds between crosses. Enjoy the beautiful non-repeating nature of the cables.

FINISHED SIZE 6¼ (6¾, 7¼, 7¾)“ (16 17, 18.5, 19.5 cm) foot circumference and 7¼ (8, 8, 8¾)” (18.5 20.5, 20.5, 22 cm) long from back of heel to tip of toe; foot length is adjustable. Socks shown measure 7¼“ (18.5 cm).

YARN Indigodragonfly MCN Sock (80% superwash Merino, 10% cashmere, 10% nylon; 400 yd 366 m/4 oz 115 g): safety pin or safety pint: discuss, 1 skein.

NEEDLES U.S. size 1½ (2.5 mm). Adjust needle size if necessary to obtain the correct gauge.

NOTIONS Markers (m); cable needle (cn); stitch holder; tapestry needle.

GAUGE 32 sts and 44 rnds = 4” (10 cm) in St st; 38 sts and 44 rnds = 4” (10 cm) in cable patt.