# A005016 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 15
4 159
5 3903
6 214143
7 25098495
8 6110517759
9 3040867308543
10 3064498377754623
11 6220489664197758975
12 25354161321592779612159
13 207142125428402158677213183
14 3388838467537660347660899221503