A140684 - OEIS

%I #9 Dec 12 2023 08:31:16

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

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

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

%N A037481 mod 10.

%C The sequence is periodic with length 10 and contains all 10 digits.

%C The first differences 1, 5, -1, -3, 7, -1, -5, 1, 3, -7 are also periodic with period length 10.

%F a(n) = A037481(n) mod 10. a(n)= a(n-10).

%F a(n)+a(n+5)= A010734(n).

%F O.g.f.: (7x^4-3x^3-x^2+5x+1)x/((1-x)(1+x)(x^4-x^3+x^2-x+1)). - _R. J. Mathar_, Jul 14 2008

%K nonn,base

%O 0,3

%A _Paul Curtz_, Jul 11 2008

%E Edited by _R. J. Mathar_, Jul 14 2008