# A016186 (b-file synthesized from sequence entry)
0 1
1 18
2 244
3 2952
4 33616
5 368928
6 3951424
7 41611392
8 432891136
9 4463129088
10 45705032704
11 465640261632
12 4725122093056
13 47800976744448
14 482407813955584
15 4859262511644672
16 48874100093157376
17 490992800745259008