OFFSET
1,1
FORMULA
a(n) = 10 - [{3^(5*10^(n+1)) mod 10^(2n+3) - 1}/(10^(2n+2)) mod 10].
CROSSREFS
KEYWORD
nonn,base
AUTHOR
V. Raman, Sep 01 2012
EXTENSIONS
Edited by N. J. A. Sloane, Sep 02 2012
STATUS
approved