# A363810 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 6 4 21 5 79 6 306 7 1196 8 4681 9 18308 10 71564 11 279820 12 1095533 13 4298463 14 16913428 15 66769536 16 264526329 17 1051845461 18 4197832133 19 16813161765 20 67571221016 21 272448598737 22 1101876945673 23 4469106749281 24 18174503562880 25 74093063050412 26 302753929958872