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 A141964 #12 Sep 08 2022 08:45:35 %S A141964 79,241,349,457,619,673,727,997,1051,1213,1321,1429,1483,1699,1753, %T A141964 1861,2131,2239,2293,2347,2617,2671,2833,2887,3049,3319,3373,3643, %U A141964 3697,3967,4021,4129,4507,4561,4723,4831,4993,5101,5209,5479,5641,5749,5857,6073 %N A141964 Primes congruent to 25 mod 27. %H A141964 Vincenzo Librandi, <a href="/A141964/b141964.txt">Table of n, a(n) for n = 1..1000</a> %F A141964 a(n) ~ 18n log n. - _Charles R Greathouse IV_, Jul 02 2016 %t A141964 Select[Range[25, 30000, 27], PrimeQ] (* _Vladimir Joseph Stephan Orlovsky_, Jun 21 2011 *) %o A141964 (Magma) [p: p in PrimesUpTo(7000) | p mod 27 eq 25 ]; // _Vincenzo Librandi_, Aug 16 2012 %o A141964 (PARI) is(n)=isprime(n) && n%27==25 \\ _Charles R Greathouse IV_, Jul 02 2016 %Y A141964 Cf. A000040, A141965. %K A141964 nonn,easy %O A141964 1,1 %A A141964 _N. J. A. Sloane_, Jul 11 2008