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A037663 Base 7 digits are, in order, the first n terms of the periodic sequence with initial period 3,1,0. 0
3, 22, 154, 1081, 7568, 52976, 370835, 2595846, 18170922, 127196457, 890375200, 6232626400, 43628384803, 305398693622, 2137790855354, 14964535987481, 104751751912368, 733262263386576, 5132835843706035 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

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*(3+x) / ( (x-1)*(7*x-1)*(1+x+x^2) ). - R. J. Mathar, Apr 30 2015

MATHEMATICA

Table[FromDigits[PadRight[{}, n, {3, 1, 0}], 7], {n, 20}] (* or *) LinearRecurrence[{7, 0, 1, -7}, {3, 22, 154, 1081}, 20] (* Harvey P. Dale, Sep 08 2015 *)

CROSSREFS

Sequence in context: A110469 A121723 A037775 * A091167 A037782 A041661

Adjacent sequences:  A037660 A037661 A037662 * A037664 A037665 A037666

KEYWORD

nonn,base,easy

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified May 6 19:52 EDT 2021. Contains 343586 sequences. (Running on oeis4.)