# A053855 (b-file synthesized from sequence entry)
1 2
2 14
3 236
4 619220
5 11890945640
6 613445895807320
7 70424130340088781680
8 325784192369064628390662800
9 38844516111082042308571222950605600
10 13159967487181842256922128281356518089759200
11 9916640076650391701813048608335186503022719034948800