This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A162992 #6 Apr 01 2024 14:22:46 %S A162992 36,144,1600,32400,1016064,45158400,2687385600,205752960000, %T A162992 19670999040000,2294425328025600,320461058211840000, %U A162992 52778155948277760000,10118415696592896000000,2233485391313240064000000 %N A162992 The second right hand column of triangle A162990. %F A162992 a(n) = ((n+1)!/(n-1))^2 for n = 2, 3, ... . %F A162992 a(n) = A052747(n+1)^2. %t A162992 Array[((#+1)!/(#-1))^2 &, 20, 2] (* _Paolo Xausa_, Apr 01 2024 *) %Y A162992 A052747(n+1) equals the square root of a(n). %Y A162992 A162991 is the first right hand column of triangle A162990. %K A162992 easy,nonn %O A162992 2,1 %A A162992 _Johannes W. Meijer_, Jul 21 2009