# A177596 (b-file synthesized from sequence entry)
0 1
1 1
2 20
3 1109
4 149777
5 40505320
6 19324787629
7 14885613436177
8 17346023517866756
9 29095672934852234945
10 67554301929824585326841
11 210353969049597164741983000
12 855886755812900060235077981449
13 4452236180954942685194928540509281