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 A175486 #2 Mar 30 2012 17:26:34
%S A175486 125,325,725,845,925,1325,1525,1885,2197,2405,2525,2725,3125,3445,
%T A175486 3725,3925,3965,4205,4325,4525,4901,4925,5365,5725,6253,6565,6725,
%U A175486 6845,6925,7085,7325,7685,7925,8125,8725,8845,8957,9325,9685,9725,9805,9925,10205
%N A175486 Composite numbers of form 8n+5 with all prime factors of form 8m+5.
%C A175486 There are no squares and no semiprimes in the sequence.
%e A175486 125=5^3, 325=5^2*13, 725=5^2*29.
%t A175486 Do[nn=8n+5;If[ !PrimeQ[nn]&&{5}==Union[Mod[(fi=First/@FactorInteger[nn]),8]],Print[nn]],{n,2*10^3}]
%Y A175486 Cf. A004770 Numbers of form 8n+5, A175461 Semiprimes of form 8n+5, A007521 Primes of form 8n+5.
%K A175486 nonn
%O A175486 1,1
%A A175486 _Zak Seidov_, May 27 2010