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A037609 Base 9 digits are, in order, the first n terms of the periodic sequence with initial period 1,2,3. 0
1, 11, 102, 919, 8273, 74460, 670141, 6031271, 54281442, 488532979, 4396796813, 39571171320, 356140541881, 3205264876931, 28847383892382, 259626455031439, 2336638095282953 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..17.

Index entries for 3-automatic sequences.

Index entries for linear recurrences with constant coefficients, signature (9,0,1,-9).

FORMULA

G.f.: x*(1+2*x+3*x^2) / ( (x-1)*(9*x-1)*(1+x+x^2) ). - R. J. Mathar, Apr 27 2015

A007095(a(n)) = A037610(n). - R. J. Mathar, Apr 27 2015

PROG

(PARI) a(n)=([0, 1, 0, 0; 0, 0, 1, 0; 0, 0, 0, 1; -9, 1, 0, 9]^(n-1)*[1; 11; 102; 919])[1, 1] \\ Charles R Greathouse IV, Feb 13 2017

CROSSREFS

Sequence in context: A087744 A054421 A037700 * A055150 A014832 A048441

Adjacent sequences:  A037606 A037607 A037608 * A037610 A037611 A037612

KEYWORD

nonn,base,easy

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified June 24 02:56 EDT 2021. Contains 345415 sequences. (Running on oeis4.)