# A113984 (b-file synthesized from sequence entry) 0 1 1 2 2 3 3 5 4 9 5 19 6 47 7 137 8 465 9 1819 10 8123 11 41077 12 233473 13 1480947 14 10412591 15 80634433 16 683674833 17 6312152355 18 63144706755 19 681317547509 20 7896054343497 21 97919789763075 22 1294863406981791 23 18200820837825481 24 271147632138373601