# A331473 (b-file synthesized from sequence entry) 0 1 1 3 2 12 3 44 4 166 5 626 6 2377 7 9063 8 34695 9 133265 10 513381 11 1982763 12 7674937 13 29767223 14 115655452 15 450067268 16 1753894162 17 6843602438 18 26734398172 19 104548010228 20 409243597192 21 1603372802888 22 6286998311062 23 24670701224714 24 96877958811586 25 380673221064366