# A215125 (b-file synthesized from sequence entry)
0 1
1 1
2 7
3 33
4 223
5 1753
6 14391
7 137137
8 1382383
9 14981673
10 174494983
11 2135204161
12 27643067007
13 375548195833
14 5326762882903
15 78889684038993
16 1213984929832591
17 19377034523034697
18 320293617185965863
19 5468629894127442913
20 96328047496084810783
21 1747805367475759936281