A081058 Number of shuffles in Guy's shuffle (see A035485) for the card that is at the top of the deck after n shuffles to come to the top again.

8, 263, 4, 23, 370, 790, 43, 48, 218, 5, 12, 22, 11, 29, 53, 26, 231, 583, 90, 271, 1988, 14, 52, 17, 6, 286, 31, 39, 40, 15, 320158, 354, 812, 487, 118, 43, 758, 470, 78, 689, 39, 29, 18, 12552564, 70, 249, 53, 2054, 10, 43, 409, 309, 13519, 224, 26, 7, 35, 800