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A135033 Period 5: repeat 2,4,6,8,0. 1
2, 4, 6, 8, 0, 2, 4, 6, 8, 0, 2, 4, 6, 8, 0, 2, 4, 6, 8, 0, 2, 4, 6, 8, 0, 2, 4, 6, 8, 0, 2, 4, 6, 8, 0, 2, 4, 6, 8, 0, 2, 4, 6, 8, 0, 2, 4, 6, 8, 0, 2, 4, 6, 8, 0, 2, 4, 6, 8, 0, 2, 4, 6, 8, 0, 2, 4, 6, 8, 0, 2, 4, 6, 8, 0, 2, 4, 6, 8, 0, 2, 4, 6, 8, 0, 2, 4, 6, 8, 0, 2, 4, 6, 8, 0, 2, 4, 6, 8, 0, 2, 4, 6, 8, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

"Cheerleader" sequence: reminiscent of the old cheer, "Two, Four, Six, Eight, Who do we appreciate!".

LINKS

Table of n, a(n) for n=0..104.

FORMULA

a(n) = 2*[(n+1) mod 5]

a(n) = 2*A010874(n+1). O.g.f.: -2(1+2x+3x^2+4x^3)/[(x-1)(1+x+x^2+x^3+x^4)]. - R. J. Mathar, Feb 14 2008

EXAMPLE

a(0) = 2*[(0+1) mod 5] = 2*(1 mod 5) = 2

MATHEMATICA

PadRight[{}, 120, {2, 4, 6, 8, 0}] (* Harvey P. Dale, Nov 21 2018 *)

CROSSREFS

Sequence in context: A061937 A065804 A275693 * A317647 A243590 A169933

Adjacent sequences:  A135030 A135031 A135032 * A135034 A135035 A135036

KEYWORD

easy,nonn

AUTHOR

William A. Tedeschi, Feb 10 2008

STATUS

approved

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Last modified February 18 19:50 EST 2019. Contains 320262 sequences. (Running on oeis4.)