# A105630 (b-file synthesized from sequence entry)
0 0
1 1
2 3
3 17
4 135
5 1353
6 16251
7 226857
8 3605775
9 64288209
10 1270969971
11 27603549057
12 653517822615
13 16755529944729
14 462601460800491
15 13685474246611737
16 431948067953729055
17 14489465807596684449
18 514794897939436455651