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

0,2

Comments

Also the decimal expansion of 103050709/1111111111.

Links

Table of n, a(n) for n=0..49.

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) ).

Crossrefs

Sequence in context: A336912 A010537 A234371 * A104696 A086088 A231986

Adjacent sequences: A172420 A172421 A172422 * A172424 A172425 A172426

Keyword

nonn,easy

Author

Paul Curtz, Feb 02 2010

Status

approved