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%I #6 Apr 01 2024 14:22:46
%S 36,144,1600,32400,1016064,45158400,2687385600,205752960000,
%T 19670999040000,2294425328025600,320461058211840000,
%U 52778155948277760000,10118415696592896000000,2233485391313240064000000
%N The second right hand column of triangle A162990.
%F a(n) = ((n+1)!/(n-1))^2 for n = 2, 3, ... .
%F a(n) = A052747(n+1)^2.
%t Array[((#+1)!/(#-1))^2 &, 20, 2] (* _Paolo Xausa_, Apr 01 2024 *)
%Y A052747(n+1) equals the square root of a(n).
%Y A162991 is the first right hand column of triangle A162990.
%K easy,nonn
%O 2,1
%A _Johannes W. Meijer_, Jul 21 2009