# A006294 (b-file synthesized from sequence entry)
0 1
1 1
2 5
3 22
4 164
5 1030
6 8885
7 65954
8 614404
9 5030004
10 49145460
11 429166584
12 4331674512
13 39599553708
14 409230997461
15 3871362876810
16 40730958917220
17 395684757649324
18 4222043580320852
19 41894315105061848
20 452123832420881296