login

A028366 as a simple table

na(n)
01
11
26
35040
41307674368000
58222838654177922817725562880000000
61982608315404440064116146708361898137544773690227268628106279599612729753600000000000000

[1,1,6,5040,1307674368000,
 8222838654177922817725562880000000,
 19826083154044400641161467083618981375447736902272\
 68628106279599612729753600000000000000]