# A025961 (b-file synthesized from sequence entry)
0 1
1 20
2 263
3 2902
4 29289
5 281472
6 2630731
7 24196634
8 220500797
9 1998686404
10 18061169919
11 162923877246
12 1468215185425
13 13223572329416
14 119060866122227
15 1071793518338338
16 9647378871105573
17 86832630229860108