OFFSET
0,3
LINKS
Clark Kimberling, Table of n, a(n) for n = 0..1000
Index entries for linear recurrences with constant coefficients, signature (4, -4, 4, -1)
FORMULA
G.f.: x/(1 - 4 x + 4 x^2 - 4 x^3 + x^4).
a(n) = 4*a(n-1) - 4*a(n-2) + 4*a(n-3) - a(n-4).
a(n) = (1/2)*A290904(n) for n >= 0.
MATHEMATICA
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, Aug 17 2017
STATUS
approved