Fsc 28. Join for working in the round with a sl st at bottom of first fsc, being careful not to twist.
Rd 1: Sc tbl in first fsc, place marker, sc to end of round (28 sts).
Rds 2-10: Sc around.
Rd 11: Sc 1 more in last st of last round, sc 1 (= first st of round), sc 2 in next st, sc to end of round.
Rd 12: Sc without increasing.
Repeat last 2 rounds 4 more times (38 sts).
Next Rd: Work to 4 sts before marker, ch 3 (new beginning of round is the second of those 3 sts), skip 4 sts after marker (32 sts).
(Edited because people were having trouble with the last line: You skip 4 sts before the marker, then the marked st, then 4 sts after the marked st, you skip 9 sts in total.)
Work even for another 7 rounds or up to desired length, ending with a sl st in first st of round. Fasten off.