# A215127 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 21
4 271
5 5073
6 149931
7 5629933
8 287996871
9 18574155561
10 1472489126563
11 143431714523781
12 16629096827674623
13 2271941249486405761
14 362871752515734614811
15 66782754543872231839773
16 14054632818067589280068791
17 3359850327080126215443462873