# A218673 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 20
4 209
5 3173
6 67292
7 1970761
8 79764057
9 4490097388
10 354111363537
11 39360693851404
12 6193012446752244
13 1383433132321835172
14 439684769985895688173
15 199116777197880585373014
16 128631139424158036273736167
17 118640007280899188486618513612