login

A006595 as a simple table

na(n)
01
12
27
333
4192
51320
610440
793240
8927360
910160640
10121564800
111576713600
1222034073600
13330032102400
145274286617600
1589575694208000
161611054821376000
1730589118816256000
18611426688897024000
1912833558093131776000
20282216632948490240000

[1,2,7,33,192,1320,10440,93240,927360,10160640,
 121564800,1576713600,22034073600,330032102400,
 5274286617600,89575694208000,1611054821376000,
 30589118816256000,611426688897024000,
 12833558093131776000,282216632948490240000]