1,1

Table of n, a(n) for n=1..96.

a(n) = 10 - [{3^(5*10^(n+1)) mod 10^(2n+3) - 1}/(10^(2n+2)) mod 10].

Cf. A216103, A007185, A016090, A091663, A018248, A091664, A018247.

Sequence in context: A200624 A105171 A010538 * A019721 A265162 A259837

Adjacent sequences: A216099 A216100 A216101 * A216103 A216104 A216105

nonn,base

V. Raman, Sep 01 2012

Edited by N. J. A. Sloane, Sep 02 2012

approved