login

A003791 as a simple table

na(n)
01
1504
216482816
334558531338240
44638226007491010887680
539841906041871272087686291128320
621903309038581548352789123727634573903790080

[1,504,16482816,34558531338240,
 4638226007491010887680,
 39841906041871272087686291128320,
 21903309038581548352789123727634573903790080]