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A002700 as a simple table

na(n)
13
240
3336
42304
514080
679872
7430080
82228224
911206656
1055050240
11265289728
121258291200
135888802816
1427246198784
15124822487040
16566935683072
172555505541120
1811441792876544
1950921132261376
20225399883694080
21992858999881728
224354066045992960

[3,40,336,2304,14080,79872,430080,2228224,
 11206656,55050240,265289728,1258291200,5888802816,
 27246198784,124822487040,566935683072,
 2555505541120,11441792876544,50921132261376,
 225399883694080,992858999881728,4354066045992960]