# A153923 (b-file synthesized from sequence entry)
0 1
1 2
2 723
3 3847
4 12686
5 64066
6 522788
7 2375205
8 17429033
9 207659953
10 1416380562
11 15388271829
12 267002004687
13 2673537774503
14 42803194029689
15 1082510269366192