OFFSET
1,2
LINKS
Harvey P. Dale, Table of n, a(n) for n = 1..832
Index entries for linear recurrences with constant coefficients, signature (1,254,-254,-1,1).
FORMULA
a(n) = A161852(n)^2-1. - Bruno Berselli, Oct 28 2011
G.f.: -24*x^2*(1+4*x+x^2) / ( (x-1)*(x^2-16*x+1)*(x^2+16*x+1) ). - R. J. Mathar, Nov 04 2011
MATHEMATICA
LinearRecurrence[{1, 254, -254, -1, 1}, {0, 24, 120, 6240, 30624}, 20] (* Harvey P. Dale, Apr 01 2020 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Sture Sjöstedt, Oct 26 2011
EXTENSIONS
More terms from Bruno Berselli, Oct 28 2011
STATUS
approved