login

A045689 as a simple table

na(n)
01
11
21
330
4756
575600
67392
754486432000
84358914560
91905468364800
107602818775552000
116690480522485760000
124616431560515174400000
13226851446883715670016000000
14127036810254880775208960000
152210440498434925488635904000000
16646080179971122507107008512000000

[1,1,1,30,756,75600,7392,54486432000,4358914560,
 1905468364800,7602818775552000,
 6690480522485760000,4616431560515174400000,
 226851446883715670016000000,
 127036810254880775208960000,
 2210440498434925488635904000000,
 646080179971122507107008512000000]