# A037191 (b-file synthesized from sequence entry)
0 1
1 0
2 756
3 17472
4 700812
5 13487040
6 143699220
7 1061439552
8 6038839548
9 27868766016
10 109814205816
11 378998996544
12 1173180111852
13 3325312497024
14 8715279904416
15 21337957069632
16 49450420013148
17 108741984430464
18 228329201738484
19 461698406495424
20 899506102392072