# A130587 (b-file synthesized from sequence entry) 0 1 1 2 2 4 3 9 4 20 5 44 6 96 7 209 8 456 9 998 10 2188 11 4797 12 10508 13 22998 14 50300 15 109925 16 239888 17 522294 18 1133548 19 2450853 20 5277428 21 11317522 22 24175780 23 51455011 24 109151272 25 230849188 26 486943160 27 1024797729 28 2152642748 29 4514814294 30 9457734492 31 19793953547