A133368 Period 5: 1, 1, 3, 7, 3.

1, 1, 3, 7, 3, 1, 1, 3, 7, 3, 1, 1, 3, 7, 3, 1, 1, 3, 7, 3, 1, 1, 3, 7, 3, 1, 1, 3, 7, 3, 1, 1, 3, 7, 3, 1, 1, 3, 7, 3, 1, 1, 3, 7, 3, 1, 1, 3, 7, 3, 1, 1, 3, 7, 3, 1, 1, 3, 7, 3, 1, 1, 3, 7, 3, 1, 1, 3, 7, 3, 1, 1, 3, 7, 3, 1, 1, 3, 7, 3, 1, 1, 3, 7, 3, 1, 1, 3, 7, 3, 1, 1, 3, 7, 3, 1, 1, 3, 7, 3, 1, 1, 3, 7, 3

Offset

0,3

Links

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

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

Formula

a(n) = n^2 - n + 1 (mod 10). - Arkadiusz Wesolowski, Jul 02 2012

G.f.: (1 + x + 3*x^2 + 7*x^3 + 3*x^4)/(1 - x^5). - Arkadiusz Wesolowski, Jul 03 2012

Mathematica

Flatten@Table[{1, 1, 3, 7, 3}, {16}] (* Arkadiusz Wesolowski, Jul 02 2012 *)

Crossrefs

Sequence in context: A233380 A320027 A134731 * A153027 A161127 A256978

Adjacent sequences: A133365 A133366 A133367 * A133369 A133370 A133371

Keyword

nonn,easy

Author

Paul Curtz, Oct 27 2007

Status

approved