# A090363 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 12
4 58
5 320
6 1954
7 12961
8 92237
9 698111
10 5583319
11 46952892
12 413560076
13 3803165348
14 36419879176
15 362366133696
16 3738804161990
17 39935163833132
18 440917642476858
19 5025099681646374
20 59044001774803872
21 714419979588724854