# A122827 (b-file synthesized from sequence entry)
1 1
2 0
3 1
4 6
5 39
6 284
7 2305
8 20682
9 203651
10 2186744
11 25463925
12 319989030
13 4320183527
14 62412737460
15 961264517369
16 15730347890082
17 272650924761195
18 4991218317261808
19 96248879172426557
20 1950405560049871134
21 41440841509597888495
22 921333064567137032620
23 21392807067461981820417