This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A182942 #5 Mar 30 2012 18:57:12
%S A182942 1,2,3,5,6,7,8,9,12,13,14,15,16,17,19,20,21,22,23,24,25,27,28,29,30,
%T A182942 31,32,33,34,37,38,39,40,41,42,43,44,45,47,48,49,50,51,52,53,54,55,56,
%U A182942 57,58,59,60,62,63,64,65,66,67,68,69,71,72,73,74,75,76,77,79,80,81,82,84,85,86,87,88,89,90,91,92
%N A182942 Ranks of primes when all odd prime powers p^j, for j>=1, are jointly ranked.
%C A182942 Column 1 of the array A182870. Complement of A182943.
%e A182942 1,2,3,5,6,7,... are the ranks of 3,5,7,11,13,17...
%e A182942 in 3,5,7,9,11,13,17,...
%t A182942 T[i_,j_]:=Sum[Floor[j*Log[Prime[i+1]]/Log[Prime[h]]],{h,2,PrimePi[Prime[i+1]^j]}]; Table[Flatten[Table[T[i,j],{i,1,80},{j,1,1}]]]
%Y A182942 Cf. A182870, A182943.
%K A182942 nonn
%O A182942 1,2
%A A182942 _Clark Kimberling_, Dec 14 2010