A131974 -id:A131974 - cp's OEIS frontend

A134011 Period 9: repeat [1, 2, 3, 4, 5, 4, 3, 2, 1].

1, 2, 3, 4, 5, 4, 3, 2, 1, 1, 2, 3, 4, 5, 4, 3, 2, 1, 1, 2, 3, 4, 5, 4, 3, 2, 1, 1, 2, 3, 4, 5, 4, 3, 2, 1, 1, 2, 3, 4, 5, 4, 3, 2, 1, 1, 2, 3, 4, 5, 4, 3, 2, 1, 1, 2, 3, 4, 5, 4, 3, 2, 1, 1, 2, 3, 4, 5, 4, 3, 2, 1, 1, 2, 3, 4, 5, 4, 3, 2, 1, 1, 2, 3, 4, 5

Offset: 0

Paul Curtz, Jan 10 2008

Vincenzo Librandi, Table of n, a(n) for n = 0..1000
Index entries for linear recurrences with constant coefficients, signature (0,0,0,0,0,0,0,0,1).

Cf. A131974.

&cat [[1, 2, 3, 4, 5, 4, 3, 2, 1]: n in [0..8]]; // Wesley Ivan Hurt, Jun 11 2016

A134011:=n->[1, 2, 3, 4, 5, 4, 3, 2, 1][(n mod 9)+1]: seq(A134011(n), n=0..100); # Wesley Ivan Hurt, Jun 11 2016

PadRight[{}, 81, {1,2,3,4,5,4,3,2,1}] (* Harvey P. Dale, Oct 31 2011 *)

a(n) = a(n-9) for n > 8. G.f.: (1 + x + x^2 + x^3 + x^4)^2/(1 - x^9). - Chai Wah Wu, Jun 04 2016

A181975 The sequence {1, 2, 3, 4, 5, 4, 3, 2} repeated.

Original entry on oeis.org

1, 2, 3, 4, 5, 4, 3, 2, 1, 2, 3, 4, 5, 4, 3, 2, 1, 2, 3, 4, 5, 4, 3, 2, 1, 2, 3, 4, 5, 4, 3, 2, 1, 2, 3, 4, 5, 4, 3, 2, 1, 2, 3, 4, 5, 4, 3, 2, 1, 2, 3, 4, 5, 4, 3, 2, 1, 2, 3, 4, 5, 4, 3, 2, 1, 2, 3, 4, 5, 4, 3, 2, 1, 2, 3, 4, 5, 4, 3, 2, 1, 2, 3, 4, 5, 4, 3

Offset: 1

Steven Sund, Apr 04 2012

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

Cf. A131974.

PadRight[{},120,{1,2,3,4,5,4,3,2}] (* Harvey P. Dale, Oct 20 2015 *)

a(n)=abs((n+3)%8-4)+1 \\ Charles R Greathouse IV, Apr 04 2012

a(n) = abs(mod((n+3),8)-4)+1.

G.f.: (2+x+x^2+x^3+x^4)/((1-x)*(1+x^4)). - Charles R Greathouse IV, Apr 04 2012

cp's OEIS Frontend

A134011 Period 9: repeat [1, 2, 3, 4, 5, 4, 3, 2, 1].

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