login

A061695 as a simple table

na(n)
11
227
3864
436000
51944000
6133358400
711379916800
81185137049600
9148142131200000
1021908575180800000
113785801791242240000
12756127866850836480000
13172901238886557941760000
1444887821634010234880000000
1513132894100921851576320000000
164301460581188603786297344000000

[1,27,864,36000,1944000,133358400,11379916800,
 1185137049600,148142131200000,21908575180800000,
 3785801791242240000,756127866850836480000,
 172901238886557941760000,
 44887821634010234880000000,
 13132894100921851576320000000,
 4301460581188603786297344000000]