A172423 Period length 10: repeat 0,9,2,7,4,5,6,3,8,1.

0, 9, 2, 7, 4, 5, 6, 3, 8, 1, 0, 9, 2, 7, 4, 5, 6, 3, 8, 1, 0, 9, 2, 7, 4, 5, 6, 3, 8, 1, 0, 9, 2, 7, 4, 5, 6, 3, 8, 1, 0, 9, 2, 7, 4, 5, 6, 3, 8, 1

Offset: 0

Author

Paul Curtz, Feb 02 2010

Keywords

• nonn
• easy

Comments

Also the decimal expansion of 103050709/1111111111.

Links

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

Formula

a(2n) = A135033(n-1).

a(2n+1) = A096230(n+1).

a(n+2) = A172430(3*n).

G.f.: -x*(9+2*x+7*x^2+4*x^3+5*x^4+6*x^5+3*x^6+8*x^7+x^8) / ( (x-1)*(1+x)*(x^4+x^3+x^2+x+1)*(x^4-x^3+x^2-x+1) ).