# A216728 (b-file synthesized from sequence entry)
0 1
1 1
2 30
3 4410
4 1837080
5 1660289400
6 2778905329200
7 7757931431250000
8 33536835305077104000
9 212373276256391153904000
10 1887114765997607482496160000
11 22736049196010108202227823840000
12 361148501823912048339843750000000000
13 7389146090843722060953495522716592000000
14 190939093198813987007780146685866111584000000