# A149492 (b-file synthesized from sequence entry) 0 1 1 1 2 4 3 14 4 59 5 243 6 1065 7 4708 8 21395 9 98025 10 454964 11 2126156 12 10012574 13 47398340 14 225511507 15 1077175891 16 5163669175 17 24827400812 18 119693621775 19 578392088330 20 2800781899561 21 13587499059804 22 66027224835105 23 321333792674211 24 1565954585986436 25 7640771328892362 26 37323634647044161 27 182506355382125949