OFFSET
0,3
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
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Paul Curtz, Jul 11 2008
EXTENSIONS
Edited by R. J. Mathar, Jul 14 2008
STATUS
approved