# A234715 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 33
4 825
5 113025
6 5538225
7 60920475
8 46360481475
9 330503872435275
10 20160736218551775
11 1687675389591187637025
12 145175524688023551724527525
13 166370135063802174111446471957325
14 194941377468714112878127508925972294225
15 8038017817167489016303831575544615607779425