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 A141925 #12 Sep 08 2022 08:45:35 %S A141925 67,113,251,389,619,757,941,1033,1171,1217,1447,1493,1723,1861,1907, %T A141925 1999,2137,2459,2551,2689,3011,3517,3701,3793,3931,4253,4391,4483, %U A141925 4621,4759,4943,5081,5449,6047,6277,6323,6553,6599,6691,6737,6829,6967,7013,7151 %N A141925 Primes congruent to 21 mod 23. %H A141925 Vincenzo Librandi, <a href="/A141925/b141925.txt">Table of n, a(n) for n = 1..1000</a> %F A141925 a(n) ~ 22n log n. - _Charles R Greathouse IV_, Jul 02 2016 %t A141925 Select[Range[21,20000,23],PrimeQ] (* _Vladimir Joseph Stephan Orlovsky_, May 18 2011 *) %o A141925 (Magma) [p: p in PrimesUpTo(9000) | p mod 23 eq 21 ]; // _Vincenzo Librandi_, Aug 16 2012 %o A141925 (PARI) is(n)=isprime(n) && n%23==21 \\ _Charles R Greathouse IV_, Jul 02 2016 %Y A141925 Cf. A000040, A141926. %K A141925 nonn,easy %O A141925 1,1 %A A141925 _N. J. A. Sloane_, Jul 11 2008