A176163 - OEIS

%I #2 Mar 31 2012 20:17:49

%S 3,9,20,44,121,585,9506,1844164,53139700920,34862071776136405511,

%T 12153640485244865516062665215354311711,

%U 12153640485244865516062665215354311711

%N a(1)=3 and a(n)=Floor[1/(n-1)^2 * a(n-1)^2]

%t a[1] = 3; a[n_] := Floor[1/(n - 1)^2 a[n - 1]^2]; Table[a [n], {n, 1, 14}]

%K nonn

%O 1,1

%A _José María Grau Ribas_, Apr 10 2010

%E f is changed by a _José María Grau Ribas_, Apr 16 2010