# A059424 (b-file synthesized from sequence entry)
0 0
1 0
2 1
3 3
4 9
5 35
6 195
7 1218
8 9184
9 75492
10 724995
11 7428905
12 86414559
13 1059030297
14 14455096201
15 206132138310
16 3228219898080
17 52501425954872
18 927663133292361
19 16944154401198843
20 333387373140423145
21 6756756713150677275
22 146490980301083247291