# A024271 (b-file synthesized from sequence entry)
0 0
1 1
2 6
3 59
4 940
5 31637
6 2005106
7 166100111
8 16050083800
9 1874971666857
10 279670143989598
11 53041020901061987
12 12139626880904714372
13 3219275040968635076157
14 979189869389394861709514
15 342690421890075448877502135
16 137691551060667051544057815472