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 A129248 #7 Jan 03 2013 12:39:31
%S A129248 377982107,437391349,716174549,742922699,1385934359,1603768277,
%T A129248 1780127639,1790436371,1895437139,1968261067,2066951933,2109424013,
%U A129248 2148523669,2150787839,2238778847,2299583987,2334899909,2368121663
%N A129248 a(n) = n-th prime of class 14- according to the Erdős-Selfridge classification.
%C A129248 a[1..2] calculated using A081641[1..11]; a[3] <= 716174549.
%H A129248 M. F. Hasler, <a href="/A129248/b129248.txt">Table of n, a(n) for n=1..339</a>
%F A129248 { a(n) } = { p = 2*m*A081641(k)+1 | k=1,2,...,oo and m=1,2,... such that p is prime and m has no factor of class > 13- }
%o A129248 (PARI) A129248 = nextclassminus(A081641) /* cf. A081640 */
%Y A129248 Cf. A056637, A081640, A081641, A129249, A129250.
%K A129248 nonn
%O A129248 1,1
%A A129248 _M. F. Hasler_, Apr 05 2007, Apr 21 2007