# A006924 (b-file synthesized from sequence entry)
0 0
1 0
2 0
3 1
4 2
5 5
6 20
7 101
8 743
9 7350
10 91763
11 1344782
12 22160335
13 401278984
14 7885687604
15 166870266608
16 3781101495300