OFFSET
1,2
LINKS
G. C. Greubel, Table of n, a(n) for n = 1..500
Index entries for linear recurrences with constant coefficients, signature (5, -14, 50, -56, 80, -64).
FORMULA
From R. J. Mathar, Feb 20 2009: (Start)
a(n) = 5*a(n-1) - 14*a(n-2) + 50*a(n-3) - 56*a(n-4) + 80*a(n-5) - 64*a(n-6).
G.f.: x*(1 +2x +16x^3 -24x^4 +32x^5)/((1-x)*(1-4x)*(1+2x^2)*(1+8x^2)). (End)
MATHEMATICA
LinearRecurrence[{5, -14, 50, -56, 80, -64}, {1, 7, 21, 73, 341, 1453}, 30] (* Harvey P. Dale, Nov 21 2012 *)
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Omar E. Pol, Dec 27 2008
EXTENSIONS
More terms from R. J. Mathar, Feb 20 2009
STATUS
approved