# A304399 (b-file synthesized from sequence entry)
0 1
1 16
2 2200
3 1809920
4 4241345876
5 20919209023760
6 185887334702902784
7 2699985099706935115520
8 59877289873410663776378876
9 1926339929784486079047963326480
10 86370374435881318779333300624751016
11 5225229347181019896500110654738959018752
12 415299644168495653846091996394573044842672676