|
%I #82 Aug 19 2016 00:28:00
%S 1,0,0,3,0,11,3,0,0,9,0,11,0,0,0,0,0,0,0,0,0,0,0,23,21,0,0,0,0,29,0,0,
%T 0,0,0,0,0,0,33,0,0,0,0,0,0,3,0,0,0,0,0,17,0,0,0,0,0,0,0,0,121,0,0,21,
%U 0,65,9,0,0,23,0,33,0,0,0,0,0,0,39,0,33,0,0,83,39,0,0,0,0,89,0,0,0,0,0,0,0,0,49,0
%N a(n) = smallest m such that 2n-1 | (10^m+1)/11, or 0 if no such m exists.
%o (PARI) for(i=0,200,i++;m=0;for(x=0,i,x++;if(((10^x+1)/11)%i==0,m=x;break));print1(m",")) \\ _V. Raman_, Nov 22 2012
%Y Cf. A002326.
%K nonn
%O 1,4
%A _V. Raman_, Sep 07 2012
|
