# A057744 (b-file synthesized from sequence entry) 0 1 1 2 2 4 3 7 4 14 5 28 6 55 7 110 8 220 9 439 10 878 11 1756 12 3511 13 7022 14 14044 15 28087 16 56174 17 112348 18 224695 19 449390 20 898780 21 1797559 22 3595118 23 7190236 24 14380471 25 28760942 26 57521884 27 115043767 28 230087534 29 460175068 30 920350135 31 1840700270 32 3681400540