# A006926 (b-file synthesized from sequence entry)
0 0
1 0
2 0
3 0
4 0
5 0
6 0
7 1
8 1
9 5
10 32
11 385
12 7573
13 181224
14 4624480
15 122089998
16 3328899586
17 93988909755