OFFSET
0,2
COMMENTS
LINKS
Seiichi Manyama, Table of n, a(n) for n = 0..10000
Index entries for linear recurrences with constant coefficients, signature (5,-10,10,-5,1).
FORMULA
a(n) = (2*n^2 + 2*n + 1)*(4*n^2 + 4*n + 1).
From Colin Barker, May 24 2016: (Start)
a(n) = 5*a(n-1) - 10*a(n-2) + 10*a(n-3) - 5*a(n-4) + a(n-5) for n>4.
G.f.: (1 + 40*x + 110*x^2 + 40*x^3 + x^4) / (1-x)^5. (End)
PROG
(PARI) a(n)=8*n^4 + 16*n^3 + 14*n^2 + 6*n + 1 \\ Charles R Greathouse IV, May 23 2016
(PARI) Vec((1+40*x+110*x^2+40*x^3+x^4)/(1-x)^5 + O(x^50)) \\ Colin Barker, May 24 2016
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Matthew Badley, May 07 2016
STATUS
approved