# A075886 (b-file synthesized from sequence entry)
1 1
2 6
3 30
4 150
5 726
6 3510
7 16854
8 80886
9 387606
10 1857078
11 8894550
12 42598518
13 204000918
14 976929462
15 4678286550
16 22403128566
17 107282481942
18 513746046774
19 2460185076054
20 11781130000758
21 56416485185430
22 270162504104886