It knitted the basque (ribbed section) of my Men's Raglan Sweater and the instructions say:
Using 3.25 mm cast on 141, knit 1 x 1 rib for 21 rows. (done)
K1, * inc purlways in next st, K1, rep from * to last st. 221 sts.
That's an increase of 80 sts over 140.
That seems like an odd number, but I could be just daft.