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 A175683 #10 May 13 2013 01:54:11 %S A175683 1,43,141,720,3038,3466,3772,4068,7896,11402,14070,17499,18683,20887, %T A175683 25166,26586,30311,33237,44072,49791,56629,58268,58764,71483,71953, %U A175683 74284,79939,86022,87199,88941,91951,92273,100176,102019,107505,109438 %N A175683 Numbers n such that 30n-13, 30n-11, 30n-1, 30n+1, 30n+11, 30n+13 are all prime. %H A175683 Charles R Greathouse IV, <a href="/A175683/b175683.txt">Table of n, a(n) for n = 1..10000</a> %e A175683 a(1)=1 because 30*1-13=17=prime, 30*1-11=19=prime, 30*1-1=29=prime, 30*1+1=31=prime, 30*1+11=41=prime, 30*1+13=43=prime. %Y A175683 Cf. A053319. %K A175683 nonn %O A175683 1,2 %A A175683 _Juri-Stepan Gerasimov_, Aug 09 2010 %E A175683 Corrected (3472 replaced by 3772, 49776 replaced by 49791) and extended by _R. J. Mathar_, Aug 13 2010