# A280714 (b-file synthesized from sequence entry)
1 1
2 1
3 2
4 6
5 144
6 2880
7 2073600
8 1306368000
9 17557585920000
10 637129677864960000
11 2312016175036366848000000
12 640890883720080890265600000000
13 306987758727332698566646824960000000000
14 136544225638605874463902854662848512000000000000