# A097832 (b-file synthesized from sequence entry)
0 1
1 20
2 380
3 7201
4 136440
5 2585160
6 48981601
7 928065260
8 17584258340
9 333172843201
10 6312699762480
11 119608122643920
12 2266241630472001
13 42938982856324100
14 813574432639685900
15 15414975237297708001