OFFSET
0,2
COMMENTS
See A289780 for a guide to related sequences.
LINKS
Clark Kimberling, Table of n, a(n) for n = 0..1000
Index entries for linear recurrences with constant coefficients, signature (7, -3, 7, -1)
FORMULA
G.f.: (1 + x + x^2)/(1 - 7 x + 3 x^2 - 7 x^3 + x^4).
a(n) = 7*a(n-1) - 3*a(n-2) + 7*a(n-3) - a(n-4).
MATHEMATICA
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, Aug 12 2017
STATUS
approved