%I A067468
%S A067468 1,20,33,46,59,72,104,117,130,143,175,188,201,214,246,259,272,285,317,
%T A067468 330,343,356,388,401,414,427,459,472,485,498,511,530,543,556,569,582,
%U A067468 614,627,640,653,685,698,711,724,756,769,782,795,827,840,853,866,898
%N A067468 Numbers n such that 7 is the first digit of 7^n.
%o A067468 (PARI) : for(n=1,1000, if(floor(7^n/10^(floor(n*log(7)/log(10))))==7,
               print1(n,",")))
%Y A067468 Cf. A067485.
%Y A067468 Sequence in context: A119873 A075230 A165236 this_sequence A127906 A108667 
               A108669
%Y A067468 Adjacent sequences: A067465 A067466 A067467 this_sequence A067469 A067470 
               A067471
%K A067468 nonn
%O A067468 1,2
%A A067468 Benoit Cloitre (benoit7848c(AT)orange.fr), Feb 22 2002