# A356892 (b-file synthesized from sequence entry)
0 1
1 0
2 0
3 0
4 24
5 60
6 120
7 210
8 101136
9 1089144
10 7409520
11 39917790
12 4097460840
13 100410712116
14 1474154203704
15 16356956618730
16 786764261166240
17 30867868254267120
18 778327514455987296
19 14658714575197061814
20 522720977799308061240
21 25075479032600008569900