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
KEYWORD
easy,nonn
AUTHOR
Johannes W. Meijer, Jul 21 2009
STATUS
approved