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 A141965 #15 Apr 29 2025 13:37:31 %S A141965 53,107,269,431,593,647,701,809,863,971,1187,1511,1619,1889,1997,2213, %T A141965 2267,2591,2699,2753,2861,2969,3023,3347,3617,3671,3779,3833,4049, %U A141965 4157,4211,4373,4481,4643,4751,4967,5021,5237,5399,5507,5669,5939,6047,6101,6263 %N A141965 Primes congruent to 26 mod 27. %C A141965 Primes congruent to 53 mod 54. - _Chai Wah Wu_, Apr 29 2025 %H A141965 Vincenzo Librandi, <a href="/A141965/b141965.txt">Table of n, a(n) for n = 1..1000</a> %t A141965 Select[Range[26, 30000, 27], PrimeQ] (* _Vladimir Joseph Stephan Orlovsky_, Jun 21 2011 *) %o A141965 (Magma) [p: p in PrimesUpTo(7000) | p mod 27 eq 26 ]; // _Vincenzo Librandi_, Aug 16 2012 %o A141965 (PARI) is(n)=isprime(n) && n%27==26 \\ _Charles R Greathouse IV_, Jul 01 2016 %Y A141965 Cf. A000040. %K A141965 nonn,easy %O A141965 1,1 %A A141965 _N. J. A. Sloane_, Jul 11 2008