# A203237 (b-file synthesized from sequence entry)
1 1
2 7
3 59
4 660
5 9280
6 148300
7 2805900
8 58575000
9 1396365000
10 37435710000
11 1077585600000
12 34227953760000
13 1189257232800000
14 43680491749440000
15 1734759507499200000
16 72342732649037760000
17 3233001543062054400000