# A307444 (b-file synthesized from sequence entry)
0 1
1 0
2 1
3 2
4 11
5 54
6 336
7 2330
8 18359
9 161660
10 1580853
11 17031728
12 200718372
13 2569989304
14 35531288796
15 527506796282
16 8368806193151
17 141271243571640
18 2527897717923387
19 47789579768358498
20 951677263953890739
21 19910429474370487166
22 436589745454529328720
23 10012315468481417357976