# A035521 (b-file synthesized from sequence entry)
1 0
2 0
3 0
4 0
5 1
6 45
7 1470
8 43890
9 1291815
10 38710035
11 1199167200
12 38692476900
13 1304976397725
14 46070080281225
15 1702810398539250
16 65862570279255750
17 2663551451057371875
18 112503209942059311375
19 4957166849516125744500