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 A213367 #8 Aug 11 2012 22:05:00 %S A213367 1,2,3,5,6,7,8,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,26,27,28, %T A213367 29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,50,51,52, %U A213367 53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70 %N A213367 Numbers that are not squares of primes. %C A213367 Numbers n such that A000005(n)<> 3. %C A213367 First differs from A175084 at a(29). %e A213367 4 is not in the sequence because 4 as three divisors: 1, 2, 4. %Y A213367 Complement of A001248. Column 3 of A210976. %Y A213367 Cf. A000005, A018252, A175084, A210994. %K A213367 nonn,easy %O A213367 1,2 %A A213367 _Omar E. Pol_, Aug 11 2012