# A125789 (b-file synthesized from sequence entry)
0 1
1 2
2 4
3 9
4 23
5 68
6 234
7 935
8 4313
9 22794
10 136851
11 925272
12 6985389
13 58417589
14 537217862
15 5396822876
16 58872576894
17 693533824034
18 8773792493050
19 118464612577309
20 1694805159152944
21 25478007021649650
22 398912310757588476