# A296726 (b-file synthesized from sequence entry)
0 0
1 1
2 2
3 7
4 28
5 149
6 894
7 6483
8 51864
9 477801
10 4778010
11 53451135
12 641413620
13 8446433085
14 118250063190
15 1792012416075
16 28672198657200
17 491536207523025
18 8847651735414450
19 169292834944205175
20 3385856698884103500
21 71531660838216529125
22 1573696538440763640750