# A046907 (b-file synthesized from sequence entry)
0 1
1 1
2 1
3 2
4 7
5 31
6 184
7 1351
8 12524
9 146468
10 2177570
11 41374407
12 1008220289
13 31559446774
14 1269310589336
15 65562045668340
16 4345161435996517