login
A162994
The third left hand column of triangle A162990.
2
64, 1600, 57600, 2822400, 180633600, 14631321600, 1463132160000, 177038991360000, 25493614755840000, 4308420893736960000, 844450495172444160000, 190001361413799936000000, 48640348521932783616000000, 14057060722838574465024000000
OFFSET
3,1
FORMULA
a(n) = ((n+1)!/3)^2 for n = 3, 4, 5, ... .
a(n) = A002301(n+1)^2.
MATHEMATICA
Array[((#+1)!/3)^2 &, 20, 3] (* Paolo Xausa, Apr 01 2024 *)
CROSSREFS
A001044 and A162993 are two other left hand columns.
A002301(n+1) equals the square root of a(n).
Sequence in context: A014794 A224282 A224205 * A225981 A232427 A194496
KEYWORD
easy,nonn
AUTHOR
Johannes W. Meijer, Jul 21 2009
STATUS
approved