# A177131 (b-file synthesized from sequence entry)
0 1
1 10
2 21
3 143
4 707
5 4716
6 29579
7 203622
8 1399099
9 9961582
10 71585287
11 523465627
12 3864076389
13 28826865756
14 216722056701
15 1641392860951
16 12507535829603
17 95839985593950
18 737953189846751
19 5707113130311621
20 44310704176742745