# A353996 (b-file synthesized from sequence entry)
1 1
2 4
3 36
4 752
5 45960
6 9133760
7 6154473664
8 14334221970688
9 117222686206799936
10 3412369204476033220608
11 357745172369222114451432448
12 136400229481294592916607770361856
13 190697841181900458854914389940360337408