OFFSET
1,1
LINKS
Index entries for linear recurrences with constant coefficients, signature (4,0,1,-4).
FORMULA
G.f.: x*(3+x) / ( (x-1)*(4*x-1)*(1+x+x^2) ). - R. J. Mathar, Apr 30 2015
a(n) = 4*a(n-1) + a(n-3) - 4*a(n-4). - Wesley Ivan Hurt, May 02 2023
CROSSREFS
KEYWORD
nonn,base,easy
AUTHOR
STATUS
approved