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A162992
The second right hand column of triangle A162990.
2
36, 144, 1600, 32400, 1016064, 45158400, 2687385600, 205752960000, 19670999040000, 2294425328025600, 320461058211840000, 52778155948277760000, 10118415696592896000000, 2233485391313240064000000
OFFSET
2,1
FORMULA
a(n) = ((n+1)!/(n-1))^2 for n = 2, 3, ... .
a(n) = A052747(n+1)^2.
MATHEMATICA
Array[((#+1)!/(#-1))^2 &, 20, 2] (* Paolo Xausa, Apr 01 2024 *)
CROSSREFS
A052747(n+1) equals the square root of a(n).
A162991 is the first right hand column of triangle A162990.
Sequence in context: A110754 A299854 A154711 * A037072 A370453 A076432
KEYWORD
easy,nonn
AUTHOR
Johannes W. Meijer, Jul 21 2009
STATUS
approved