A037781 Base 6 digits are, in order, the first n terms of the periodic sequence with initial period 3,1,2,0.

3, 19, 116, 696, 4179, 25075, 150452, 902712, 5416275, 32497651, 194985908, 1169915448, 7019492691, 42116956147, 252701736884, 1516210421304, 9097262527827, 54583575166963, 327501451001780, 1965008706010680

Offset

1,1

Links

Table of n, a(n) for n=1..20.

Index entries for linear recurrences with constant coefficients, signature (6,0,0,1,-6).

Formula

G.f.: x*(3+x+2*x^2) / ( (x-1)*(6*x-1)*(1+x)*(x^2+1) ). - R. J. Mathar, May 01 2015

Crossrefs

Sequence in context: A229928 A309183 A261777 * A037585 A084133 A005667

Adjacent sequences: A037778 A037779 A037780 * A037782 A037783 A037784

Keyword

nonn,base,easy

Author

Clark Kimberling

Status

approved