# A036727 (b-file synthesized from sequence entry) 0 1 1 1 2 1 3 3 4 9 5 30 6 107 7 392 8 1489 9 5783 10 22874 11 91822 12 373111 13 1531744 14 6343528 15 26469872 16 111180537 17 469696489 18 1994490659 19 8508116485 20 36443396006 21 156680537096 22 675885192670 23 2924577632532 24 12690327612739 25 55208106904873