A139788 Period 5: repeat [1, 7, 3, 9, 5].

1, 7, 3, 9, 5, 1, 7, 3, 9, 5, 1, 7, 3, 9, 5, 1, 7, 3, 9, 5, 1, 7, 3, 9, 5, 1, 7, 3, 9, 5, 1, 7, 3, 9, 5, 1, 7, 3, 9, 5, 1, 7, 3, 9, 5, 1, 7, 3, 9, 5, 1, 7, 3, 9, 5, 1, 7, 3, 9, 5, 1, 7, 3, 9, 5, 1, 7, 3, 9, 5, 1, 7, 3, 9, 5, 1, 7, 3, 9, 5

Offset

0,2

Links

Table of n, a(n) for n=0..79.

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

Formula

a(n) = (1-4n) mod 10. - Wesley Ivan Hurt, Dec 03 2022

Mathematica

PadRight[{}, 100, {1, 7, 3, 9, 5}] (* Harvey P. Dale, Aug 14 2023 *)

Prog

(PARI) a(n)=[1, 7, 3, 9, 5][n%5+1] \\ Charles R Greathouse IV, Jun 02 2011

Crossrefs

Sequence in context: A361604 A003957 A021579 * A093525 A139340 A195725

Adjacent sequences: A139785 A139786 A139787 * A139789 A139790 A139791

Keyword

nonn,easy,less

Author

Paul Curtz, May 21 2008

Status

approved