A140684 A037481 mod 10.

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, 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, 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

Offset: 0

Author

Paul Curtz, Jul 11 2008

Keywords

• nonn
• base

Comments

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

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

Formula

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

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

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

Extensions

Edited by R. J. Mathar, Jul 14 2008