# A177564 (b-file synthesized from sequence entry)
0 1
1 1
2 6
3 90
4 2520
5 112681
6 7368841
7 663399996
8 78683697960
9 11891546908080
10 2230852444731961
11 508662924427157281
12 138544315556694333336
13 44427011758118629606980
14 16567455622575976083141540
15 7109119064485787682672633841
16 3478010197625548606811131876321