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 A142004 #17 Sep 08 2022 08:45:35 %S A142004 173,347,463,521,811,1217,1913,2029,2087,2203,2377,2551,2609,2957, %T A142004 3769,3943,4001,4349,4523,4639,4813,4871,4987,5393,5683,5741,5857, %U A142004 6089,6263,6379,6553,6959,7307,7481,7829,8293,8467,8641,8699,9221,9337,9511,9743 %N A142004 Primes congruent to 28 mod 29. %H A142004 Vincenzo Librandi, <a href="/A142004/b142004.txt">Table of n, a(n) for n = 1..1000</a> %F A142004 a(n) ~ 28n log n. - _Charles R Greathouse IV_, Jul 02 2016 %t A142004 Select[Range[28,20000,29],PrimeQ] (* _Vladimir Joseph Stephan Orlovsky_, Apr 07 2011 *) %o A142004 (Magma) [p: p in PrimesUpTo(12000) | p mod 29 eq 28 ]; // _Vincenzo Librandi_, Aug 17 2012 %o A142004 (PARI) is(n)=isprime(n) && n%29==28 \\ _Charles R Greathouse IV_, Jul 02 2016 %Y A142004 Cf. A000040, A141977, A141978. %K A142004 nonn,easy %O A142004 1,1 %A A142004 _N. J. A. Sloane_, Jul 11 2008