OFFSET
0,2
LINKS
Harvey P. Dale, Table of n, a(n) for n = 0..934
Index entries for linear recurrences with constant coefficients, signature (7,58)
FORMULA
G.f.: (1 - 7*x^2)/(1 - 7*x - 56*x^2).
a(n) = Sum_{k=0..n} A122950(n,k)*7^k.
MATHEMATICA
CoefficientList[Series[(1 - 7*x^2)/(1 - 7*x - 56*x^2), {x, 0, 20}], x] (* Wesley Ivan Hurt, Jan 21 2017 *)
LinearRecurrence[{7, 56}, {1, 7, 98}, 20] (* Harvey P. Dale, Dec 27 2019 *)
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Philippe Deléham, Dec 31 2007
EXTENSIONS
a(8) and a(13) corrected by Georg Fischer, May 03 2019
STATUS
approved