# A165964 (b-file synthesized from sequence entry)
1 1
2 1
3 0
4 4
5 16
6 86
7 542
8 3932
9 32330
10 297438
11 3028320
12 33814454
13 410954878
14 5400878692
15 76329470882
16 1154445436334
17 18606430004984
18 318369275913710
19 5764046146341198
20 110091446931897180
21 2212282487296335866