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 A087376 #8 May 22 2015 03:46:20
%S A087376 1,2,6,7,14,7,30,24,30,19,60,23,72,33,46,48,90,34,124,51,82,64,144,67,
%T A087376 148,78,118,87,240,58,232,113,150,114,200,88,288,165,202,138,332,91,
%U A087376 352,167,202,163,384,136,372,143,258,195,500,142,360,207,318,226,552,137
%N A087376 Leading diagonal of A087377.
%H A087376 Ivan Neretin, <a href="/A087376/b087376.txt">Table of n, a(n) for n = 1..1000</a>
%F A087376 Conjecture: a(n) < n^2.
%t A087376 f = Function[n, k = cnt = 0; While[cnt < n, k++; If[PrimeQ[k n + 1], cnt++]]; k]; Table[f[n], {n, 60}] (* _Ivan Neretin_, May 22 2015 *)
%Y A087376 Cf. A034693, A087377.
%K A087376 nonn
%O A087376 1,2
%A A087376 _Amarnath Murthy_, Sep 09 2003
%E A087376 More terms from _David Wasserman_, May 24 2005