A028293 Period 7.

1, 2, 1, 3, 1, 2, 1, 1, 2, 1, 3, 1, 2, 1, 1, 2, 1, 3, 1, 2, 1, 1, 2, 1, 3, 1, 2, 1, 1, 2, 1, 3, 1, 2, 1, 1, 2, 1, 3, 1, 2, 1, 1, 2, 1, 3, 1, 2, 1, 1, 2, 1, 3, 1, 2, 1, 1, 2, 1, 3, 1, 2, 1, 1, 2, 1, 3, 1, 2, 1, 1, 2, 1, 3, 1, 2, 1, 1, 2, 1

Offset

0,2

Links

Table of n, a(n) for n=0..79.

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

Formula

G.f.: -(x^2 - x + 1)*(x^4 + 3*x^3 + 3*x^2 + 3*x + 1) / ( (x-1)*(1 + x + x^2 + x^3 + x^4 + x^5 + x^6) ). - R. J. Mathar, Dec 15 2015

Mathematica

PadRight[{}, 120, {1, 2, 1, 3, 1, 2, 1}] (* Harvey P. Dale, Apr 15 2020 *)

Crossrefs

Sequence in context: A265578 A279288 A078734 * A092782 A119647 A228098

Adjacent sequences: A028290 A028291 A028292 * A028294 A028295 A028296

Keyword

nonn,easy

Author

N. J. A. Sloane

Status

approved