# A012730 (b-file synthesized from sequence entry)
0 2
1 448
2 2138112
3 53551718400
4 4262315839979520
5 826978943730607718400
6 331594807758028302723317760
7 245412719115132295441404238233600
8 308745457206861968420290988707864903680
9 620129923454446057412994114512456319793889280