A156551 Period 10: repeat [8, 6, 0, 4, 2, 2, 4, 0, 6, 8].

8, 6, 0, 4, 2, 2, 4, 0, 6, 8, 8, 6, 0, 4, 2, 2, 4, 0, 6, 8, 8, 6, 0, 4, 2, 2, 4, 0, 6, 8, 8, 6, 0, 4, 2, 2, 4, 0, 6, 8, 8, 6, 0, 4, 2, 2, 4, 0, 6, 8, 8, 6, 0, 4, 2, 2, 4, 0, 6, 8, 8, 6, 0, 4, 2, 2, 4, 0, 6, 8, 8, 6, 0, 4, 2, 2, 4, 0, 6, 8, 8, 6, 0, 4, 2, 2, 4, 0, 6, 8

Offset

0,1

Comments

See A131715.

Links

Table of n, a(n) for n=0..89.

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

Formula

a(n) = A155110(n) mod 10.

G.f.: 2*(4*x^8-x^7+x^6+x^5+x^3+x^2-x+4)/((1-x)*(x^4-x^3+x^2-x+1)*(x^4+x^3+x^2+x+1)). - R. J. Mathar, Feb 23 2009

a(n) = (15*(4-m^4+8*m^3-19*m^2+12*m)-2*(m^3-6*m^2+17*m-18)*(-1)^floor(n/5))/12 where m = n-5*floor(n/5). - Luce ETIENNE, Oct 13 2017

Mathematica

PadRight[{}, 100, {8, 6, 0, 4, 2, 2, 4, 0, 6, 8}] (* Paolo Xausa, May 23 2026 *)

Crossrefs

Cf. A010874, A131715, A155110.

Sequence in context: A394538 A153617 A069855 * A391784 A074738 A344041

Adjacent sequences: A156548 A156549 A156550 * A156552 A156553 A156554

Keyword

nonn,easy,less

Author

Paul Curtz, Feb 09 2009

Extensions

Edited by R. J. Mathar, Feb 23 2009

More terms from Jinyuan Wang, Feb 26 2020

Status

approved