# A005739 (b-file synthesized from sequence entry)
1 4
2 16
3 152
4 2680
5 68968
6 2311640
7 95193064
8 4645069336
9 261938616104
10 16756882325464
11 1198897678224232
12 94851206834082200
13 8221740727881348520
14 774839374768829174104
15 78880995816162599086568
16 8626562553228821851608856