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 A238673 #6 Nov 18 2014 16:57:35 %S A238673 3,7,11,29,193,139,107,181,101,17,379,641,167,3691,257,2243,1279,1217, %T A238673 3581,757,6113,971,5011,5843,317,15199,2741,761,59221,6067,14423,5167, %U A238673 13043,3191,43321,8819,2333,23497,15083,15107,414769,13841,20477,29101,3137 %N A238673 First prime p such that (p+n)^2+n is prime but (p+j)^2+j is not prime for all 0<j<n. %H A238673 Alois P. Heinz, <a href="/A238673/b238673.txt">Table of n, a(n) for n = 1..130</a> %t A238673 pQ[n_]:=Module[{pr=2,c},c=Table[(pr+i)^2+i,{i,n}];While[!PrimeQ[ Last[ c]]|| AnyTrue[Most[c],PrimeQ],pr=NextPrime[pr];c=Table[(pr+i)^2+i,{i,n}]];pr]; Array[pQ,50] (* _Harvey P. Dale_, Nov 18 2014 *) %Y A238673 Row n=1 of A238086. %K A238673 nonn %O A238673 1,1 %A A238673 _Alois P. Heinz_, Mar 02 2014