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 A275475 #30 Apr 26 2018 18:13:22
%S A275475 11,29,71,149,491,599,701,1439,1451,2339,3761,4211,5399,5651,6269,
%T A275475 6701,7541,9059,9311,9689,9941,10859,11831,12569,12791,13679,15299,
%U A275475 15551,16979,18089,19301,19469,22031,22541,23549,23879,25229,25841,27329,27791,28541,30809
%N A275475 Primes p such that p+2^3, p+2^5 and p+2^7 are all primes.
%H A275475 Dana Jacobsen, <a href="/A275475/b275475.txt">Table of n, a(n) for n = 1..10000</a>
%e A275475 11 is in the sequence because 11+8 = 19, 11+32 = 43 and 11+128 = 139 are all primes.
%e A275475 29 is in the sequence because 29+8 = 37, 29+32 = 61 and 29+128 = 157 are all primes.
%t A275475 Select[Prime@ Range@ 3450, Function[k, Times @@ Boole@ PrimeQ@ Map[k + 2^# &, {3, 5, 7}] == 1]] (* _Michael De Vlieger_, Aug 10 2016 *)
%t A275475 Select[Prime[Range[4000]],AllTrue[#+{8,32,128},PrimeQ]&] (* The program uses the AllTrue function from Mathematica version 10 *) (* _Harvey P. Dale_, Apr 26 2018 *)
%o A275475 (Perl) use ntheory ":all"; say for sieve_prime_cluster(2, 1e6, 2**3, 2**5, 2**7); # _Dana Jacobsen_, Sep 29 2016
%Y A275475 Cf. A269257, A269258, A269259, A269859, A270203.
%Y A275475 Cf. A275485 (a subsequence).
%K A275475 nonn
%O A275475 1,1
%A A275475 _Debapriyay Mukhopadhyay_, Jul 29 2016