# A174496 (b-file synthesized from sequence entry)
1 1
2 6
3 66
4 1041
5 21216
6 527631
7 15441636
8 518651881
9 19630068656
10 825581830491
11 38159948599956
12 1921319136589221
13 104603652465885096
14 6120324106269585751
15 382829011514506048556
16 25484466375276284094561