A037669 Base 6 digits are, in order, the first n terms of the periodic sequence with initial period 3,2,0.

3, 20, 120, 723, 4340, 26040, 156243, 937460, 5624760, 33748563, 202491380, 1214948280, 7289689683, 43738138100, 262428828600, 1574572971603, 9447437829620, 56684626977720, 340107761866323, 2040646571197940

Offset

1,1

Links

Harvey P. Dale, Table of n, a(n) for n = 1..1000

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

Formula

G.f.: x*(3+2*x) / ( (x-1)*(6*x-1)*(1+x+x^2) ). - R. J. Mathar, Apr 30 2015

Mathematica

Table[FromDigits[PadRight[{}, n, {3, 2, 0}], 6], {n, 20}] (* Harvey P. Dale, Jun 23 2022 *)

Crossrefs

Sequence in context: A001652 A128910 A037788 * A228066 A009125 A037795

Adjacent sequences: A037666 A037667 A037668 * A037670 A037671 A037672

Keyword

nonn,base,easy

Author

Clark Kimberling

Status

approved