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 A081636 #7 Jan 13 2014 12:01:21
%S A081636 49681,109441,120103,151561,198733,210193,246241,255043,266401,280243,
%T A081636 295873,326659,326701,347773,355171,360421,368881,397633,397673,
%U A081636 423001,441877,447137,471241,480541,489989,499397,508037,511507,532757,539401
%N A081636 Class 8+ primes.
%D A081636 R. K. Guy, Unsolved Problems in Number Theory, A18.
%H A081636 T. D. Noe, <a href="/A081636/b081636.txt">Table of n, a(n) for n=1..10000</a>
%p A081636 For Maple program see Mathar link in A005105.
%t A081636 PrimeFactors[n_Integer] := Flatten[ Table[ #[[1]], {1}] & /@ FactorInteger[n]]; f[n_Integer] := Block[{m = n}, If[m == 0, m = 1, While[ IntegerQ[m/2], m /= 2]; While[ IntegerQ[m/3], m /= 3]]; Apply[Times, PrimeFactors[m] + 1]]; ClassPlusNbr[n_] := Length[ NestWhileList[f, n, UnsameQ, All]] - 3; Prime[ Select[ Range[44535], ClassPlusNbr[ Prime[ # ]] == 8 &]]
%Y A081636 Cf. A005113, A005105, A005106, A005107, A005108, A081633, A081634, A081635, A081637, A081638, A081639.
%K A081636 nonn
%O A081636 1,1
%A A081636 _Robert G. Wilson v_, Mar 20 2003