A158607 Period 5: repeat 9,11,13,5,7.

9, 11, 13, 5, 7, 9, 11, 13, 5, 7, 9, 11, 13, 5, 7, 9, 11, 13, 5, 7, 9, 11, 13, 5, 7, 9, 11, 13, 5, 7, 9, 11, 13, 5, 7, 9, 11, 13, 5, 7, 9, 11, 13, 5, 7, 9, 11, 13, 5, 7, 9, 11, 13, 5, 7, 9, 11, 13, 5, 7, 9, 11, 13, 5, 7, 9, 11, 13, 5, 7, 9, 11, 13, 5, 7, 9, 11, 13, 5, 7

Offset: 1

Author

Paul Curtz, Mar 22 2009

Keywords

• nonn
• easy

Links

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

Crossrefs

Cf. A158606.

Formula

a(n) = A158606(2n-1) + A158606(2n).

G.f.: -x*(9+11*x+13*x^2+5*x^3+7*x^4)/((x-1)*(1+x+x^2+x^3+x^4)). - R. J. Mathar, Apr 08 2009

a(n) = 2*n+7-10*floor((n+1)/5). - Aaron J Grech, Aug 30 2024

Extensions

Edited by R. J. Mathar, Apr 08 2009