# A177778 (b-file synthesized from sequence entry)
0 1
1 2
2 12
3 160
4 4272
5 221648
6 22347648
7 4416360160
8 1724182065408
9 1336677590208512
10 2064038664552586752
11 6359502604300426739200
12 39136760890428640414851072
13 481344480930558145524346370048