# A125408 (b-file synthesized from sequence entry)
0 1
1 20
2 218
3 1994
4 21078
5 227450
6 2509508
7 28044008
8 316237326
9 3587876114
10 40876370578
11 467018577782
12 5345948876388
13 61273602792708
14 702905295827666
15 8068104827974874
16 92643421204990558
17 1064070251138125106