login

A196687 as a simple table

na(n)
11
24
324
4336
55520
6203040
77025760
8510370560
930163311360
103577017024000
11319851801561600
1255850407258060800
137021439018770176000
141692163531361176473600
15284409062346887622144000
1690395009213694143422464000
1719571060809440210728706048000
187929132907666579072319471616000

[1,4,24,336,5520,203040,7025760,510370560,
 30163311360,3577017024000,319851801561600,
 55850407258060800,7021439018770176000,
 1692163531361176473600,284409062346887622144000,
 90395009213694143422464000,
 19571060809440210728706048000,
 7929132907666579072319471616000]