# A357833 (b-file synthesized from sequence entry) 0 0 1 0 2 1 3 3 4 11 5 52 6 304 7 2114 8 16992 9 154626 10 1568706 11 17535108 12 213965520 13 2828584824 14 40259041188 15 613656673476 16 9971942784132 17 172071391424832 18 3141974627361216 19 60523400730707208 20 1226519845766281008 21 26084378634267048984 22 580854626450078463000