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A037607 Base 7 digits are, in order, the first n terms of the periodic sequence with initial period 1,2,3. 0
1, 9, 66, 463, 3243, 22704, 158929, 1112505, 7787538, 54512767, 381589371, 2671125600, 18697879201, 130885154409, 916196080866, 6413372566063, 44893607962443, 314255255737104, 2199786790159729 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..19.

Index entries for linear recurrences with constant coefficients, signature (7,0,1,-7).

FORMULA

G.f.: x*(1+2*x+3*x^2) / ( (x-1)*(7*x-1)*(1+x+x^2) ). - R. J. Mathar, Apr 27 2015

MATHEMATICA

Module[{nn=20, t}, t=PadRight[{}, nn, {1, 2, 3}]; Table[FromDigits[Take[t, i], 7], {i, nn}]] (* Harvey P. Dale, Oct 02 2013 *)

CROSSREFS

Sequence in context: A002695 A003408 A037698 * A055148 A014830 A048439

Adjacent sequences:  A037604 A037605 A037606 * A037608 A037609 A037610

KEYWORD

nonn,base,easy

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified March 23 07:05 EDT 2019. Contains 321422 sequences. (Running on oeis4.)