# A364723 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 8 4 38 5 196 6 1073 7 6120 8 35968 9 216304 10 1324676 11 8232981 12 51796538 13 329229344 14 2111031444 15 13638557196 16 88695018723 17 580153216512 18 3814285704000 19 25192499164320 20 167075960048996 21 1112162062296061 22 7428213584196010 23 49766086788057256