# A060390 (b-file synthesized from sequence entry)
0 0
1 1
2 8
3 21
4 377
5 2584
6 6765
7 832040
8 2178309
9 14930352
10 39088169
11 701408733
12 12586269025
13 1548008755920
14 4052739537881
15 27777890035288
16 72723460248141
17 1304969544928657
18 8944394323791464
19 23416728348467685