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 A138631 #26 Oct 10 2019 13:16:30
%S A138631 43,179,281,349,383,587,757,859,1063,1097,1301,1471,1607,1709,1777,
%T A138631 1811,1879,1913,2083,2287,2389,2423,2593,2729,2797,3001,3137,3307,
%U A138631 3511,3613,3851,3919,4021,4157,4259,4327,4463,4871,4973,5279,5347,5381,5449,5483
%N A138631 Primes of the form 17*k + 9.
%H A138631 Daniel Starodubtsev, <a href="/A138631/b138631.txt">Table of n, a(n) for n = 1..10000</a>
%F A138631 From _A.H.M. Smeets_, Sep 05 2019: (Start)
%F A138631 a(n)/log(a(n)) ~ 16*n;
%F A138631 Integral_{x=2..a(n)} dx/log(x) ~ 16*n. (End)
%e A138631 17*2 + 9 = 43, 17*10 + 9 = 179, 17*16 + 9 = 281, 17*20 + 9 = 349, 17*22 + 9 = 349, ...
%t A138631 a={};Do[x=17*n+9;If[PrimeQ[x],AppendTo[a,x]],{n,10^2}];a
%t A138631 Select[17*Range[350]+9,PrimeQ] (* _Harvey P. Dale_, May 14 2017 *)
%Y A138631 Cf. A138632.
%Y A138631 Primes congruent to k mod 17: A129484 (k=1), A140544 (k=2), A092074 (k=3), A094657 (k=4), A138623 (k=5), A140545 (k=6), A138629 (k=7), A138633 (k=8), this sequence (k=9), A138627 (k=10), A140542 (k=11), A138625 (k=12), A141865 (k=13), A140540 (k=14), A140543 (k=15), A140541 (k=16).
%K A138631 nonn
%O A138631 1,1
%A A138631 _Vladimir Joseph Stephan Orlovsky_, May 14 2008
%E A138631 More terms from _N. J. A. Sloane_, Jul 11 2008