# A144320 (b-file synthesized from sequence entry)
1 1
2 1
3 64
4 4096
5 264160
6 16906240
7 1082257408
8 69264474112
9 4432942899904
10 283708353851392
11 18157335711582208
12 1162069485541261312
13 74372447143871647744
14 4759836617207785455616
15 304629543505661931028480