# A305535 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 13
4 75
5 557
6 5179
7 58589
8 784715
9 12154061
10 213593563
11 4195613373
12 91031201643
13 2160916171181
14 55687501548539
15 1547866851663261
16 46150908197995403
17 1469089501918434957
18 49722765216242122267
19 1782934051704982201469
20 67514992620138056010667