# A185630 (b-file synthesized from sequence entry) 0 1 1 3 2 12 3 55 4 315 5 2243 6 19378 7 198363 8 2358860 9 32060736 10 491393909 11 8398281337 12 158541018923 13 3279307650137 14 73808041476439 15 1796794875356409 16 47063878147374980 17 1320276655048586177 18 39504980013582635300 19 1256210676237601811305 20 42313074100060933324771