# A219952 (b-file synthesized from sequence entry)
0 1
1 0
2 1
3 0
4 6
5 0
6 545
7 5504
8 652036
9 44013568
10 11112714624
11 3517475475328
12 2781543486427548
13 3568483481372543360
14 9829161878198755474915
15 48599777948701165162242560
16 484370819140388708451108625276
17 9036085159101926537420075859958528