# A003551 (b-file synthesized from sequence entry)
1 1
2 3
3 47
4 141
5 178481
6 535443
7 2796203
8 8388607
9 8388609
10 25165821
11 131421541
12 394264623
13 499069107643
14 1497207322929
15 23456248059221
16 70368744177663