A037787 Base 5 digits are, in order, the first n terms of the periodic sequence with initial period 3,2,0,1.

3, 17, 85, 426, 2133, 10667, 53335, 266676, 1333383, 6666917, 33334585, 166672926, 833364633, 4166823167, 20834115835, 104170579176, 520852895883, 2604264479417, 13021322397085, 65106611985426, 325533059927133

Offset

1,1

Links

Table of n, a(n) for n=1..21.

Index entries for linear recurrences with constant coefficients, signature (6,-6,6,-5).

Formula

G.f.: x*(3-x+x^2) / ( (x-1)*(5*x-1)*(x^2+1) ). - R. J. Mathar, May 01 2015

a(n) = 6*a(n-1) - 6*a(n-2) + 6*a(n-3) - 5*a(n-4). - Wesley Ivan Hurt, Mar 22 2023

Crossrefs

Sequence in context: A344228 A216681 A350456 * A037668 A119884 A143549

Adjacent sequences: A037784 A037785 A037786 * A037788 A037789 A037790

Keyword

nonn,base,easy

Author

Clark Kimberling

Status

approved