# A018794 (b-file synthesized from sequence entry) 0 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 1 10 3 11 8 12 20 13 48 14 112 15 256 16 576 17 1488 18 3648 19 8208 20 18239 21 40123 22 87532 23 189630 24 408376 25 932127 26 2091911 27 4632601 28 9939498 29 21220735 30 45121371 31 95597951 32 201891450