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A037702 Base-4 digits are, in order, the first n terms of the periodic sequence with initial period 1,3,0,2. 0
1, 7, 28, 114, 457, 1831, 7324, 29298, 117193, 468775, 1875100, 7500402, 30001609, 120006439, 480025756, 1920103026, 7680412105, 30721648423, 122886593692, 491546374770, 1966185499081, 7864741996327, 31458967985308 (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+3*x+2*x^3) ) / ( (x-1)*(4*x-1)*(1+x)*(x^2+1) ). - R. J. Mathar, Oct 13 2015

MATHEMATICA

Module[{nn=30, d}, d=PadRight[{}, nn, {1, 3, 0, 2}]; Table[FromDigits[ Take[ d, n], 4], {n, nn}]] (* Harvey P. Dale, Feb 11 2015 *)

CROSSREFS

Sequence in context: A200666 A207098 A037597 * A302523 A290913 A303406

Adjacent sequences:  A037699 A037700 A037701 * A037703 A037704 A037705

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified May 9 13:42 EDT 2021. Contains 343742 sequences. (Running on oeis4.)