# A038225 (b-file synthesized from sequence entry)
0 1
1 4
2 30
3 246
4 2037
5 16886
6 139997
7 1160693
8 9623140
9 79784098
10 661478734
11 5484227157
12 45468956106
13 376976720745
14 3125460977225
15 25912757426660
16 214839027697334
17 1781200165693270
18 14767680082482085
19 122436758775876478