# A375382 (b-file synthesized from sequence entry) 1 1 2 3 3 4 4 6 5 10 6 16 7 26 8 52 9 108 10 240 11 574 12 1566 13 4542 14 14998 15 51080 16 193986 17 776946 18 3396530 19 15302498 20 75908634 21 384194222 22 2104919470 23 11853419616 24 71548745928 25 440446031112 26 2912298313022 27 19496636176860 28 139215008197810 29 1012273345561864 30 7779962149588026