A037780 Base 5 digits are, in order, the first n terms of the periodic sequence with initial period 3,1,2,0.

3, 16, 82, 410, 2053, 10266, 51332, 256660, 1283303, 6416516, 32082582, 160412910, 802064553, 4010322766, 20051613832, 100258069160, 501290345803, 2506451729016, 12532258645082, 62661293225410, 313306466127053

Offset

1,1

Links

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

Index entries for linear recurrences with constant coefficients, signature (5,0,0,1,-5).

Formula

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

Mathematica

Table[FromDigits[PadRight[{}, n, {3, 1, 2, 0}], 5], {n, 30}] (* Harvey P. Dale, May 17 2018 *)

Crossrefs

Sequence in context: A290587 A072615 A020871 * A163012 A164100 A041707

Adjacent sequences: A037777 A037778 A037779 * A037781 A037782 A037783

Keyword

nonn,base,easy

Author

Clark Kimberling

Status

approved