# A293510 (b-file synthesized from sequence entry)
0 1
1 1
2 1
3 4
4 23
5 241
6 3732
7 83987
8 2666729
9 117807298
10 7217946453
11 612089089261
12 71991021616582
13 11761139981560581
14 2675674695560997301
15 849270038176762472316
16 376910699272413914514283
17 234289022942841270608166061
18 204344856617470777364053906796