A037541 Base 8 digits are, in order, the first n terms of the periodic sequence with initial period 1,2,1.

1, 10, 81, 649, 5194, 41553, 332425, 2659402, 21275217, 170201737, 1361613898, 10892911185, 87143289481, 697146315850, 5577170526801, 44617364214409, 356938913715274, 2855511309722193

Offset

1,2

Links

Table of n, a(n) for n=1..18.

Index entries for linear recurrences with constant coefficients, signature (8,0,1,-8).

Formula

G.f.: x*(1+x)^2 / ( (x-1)*(8*x-1)*(1+x+x^2) ). - R. J. Mathar, Apr 30 2015

Mathematica

CoefficientList[Series[(1 + x)^2/((x - 1)*(8*x - 1)*(1 + x + x^2)), {x, 0, 30}], x] (* Wesley Ivan Hurt, Dec 27 2023 *)

Crossrefs

Sequence in context: A018202 A154236 A095004 * A037485 A343276 A363559

Adjacent sequences: A037538 A037539 A037540 * A037542 A037543 A037544

Keyword

nonn,base,easy

Author

Clark Kimberling

Status

approved