# A032440 (b-file synthesized from sequence entry) 0 1 1 2 2 2 3 4 4 8 5 26 6 93 7 378 8 1562 9 6580 10 27776 11 117570 12 497785 13 2108418 14 8930754 15 37830676 16 160251624 17 678835194 18 2875587605 19 12181180442 20 51600296826 21 218582354212 22 925929680832 23 3922301042114 24 16615133763313