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A037695 Base-4 digits are, in order, the first n terms of the periodic sequence with initial period 1,2,3,0. 0
1, 6, 27, 108, 433, 1734, 6939, 27756, 111025, 444102, 1776411, 7105644, 28422577, 113690310, 454761243, 1819044972, 7276179889, 29104719558, 116418878235, 465675512940, 1862702051761, 7450808207046, 29803232828187 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..23.

Index entries for linear recurrences with constant coefficients, signature (4,0,0,1,-4).

FORMULA

G.f.: ( x*(1+2*x+3*x^2) ) / ( (x-1)*(4*x-1)*(1+x)*(x^2+1) ). - R. J. Mathar, Oct 11 2015

MATHEMATICA

nn=30; With[{dgs=PadRight[{}, nn, {1, 2, 3, 0}]}, Table[FromDigits[ Take[ dgs, n], 4], {n, nn}]] (* Harvey P. Dale, Jun 13 2013 *)

CROSSREFS

Sequence in context: A220529 A027471 A305780 * A318638 A094829 A055145

Adjacent sequences:  A037692 A037693 A037694 * A037696 A037697 A037698

KEYWORD

nonn,base,easy

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified June 18 06:58 EDT 2021. Contains 345098 sequences. (Running on oeis4.)