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 A141909 #20 Apr 29 2025 04:51:35 %S A141909 73,211,257,349,487,809,947,1039,1223,1361,1453,1499,1637,1867,1913, %T A141909 2143,2281,2557,2741,2833,2879,2971,3109,4259,4397,4673,4903,5087, %U A141909 5179,5501,5639,5869,6007,6053,6329,6421,7019,7433,8123,8353,8537,8629,8951,9043 %N A141909 Primes congruent to 4 mod 23. %C A141909 Primes congruent to 27 mod 46. - _Chai Wah Wu_, Apr 28 2025 %H A141909 Vincenzo Librandi, <a href="/A141909/b141909.txt">Table of n, a(n) for n = 1..1000</a> %F A141909 a(n) ~ 22n log n. - _Charles R Greathouse IV_, Jul 03 2016 %t A141909 Select[Range[4,10000,23],PrimeQ] (* _Vladimir Joseph Stephan Orlovsky_, Apr 05 2011 *) %o A141909 (Magma) [p: p in PrimesUpTo(10000) | p mod 23 eq 4 ]; // _Vincenzo Librandi_, Aug 16 2012 %o A141909 (PARI) is(n)=isprime(n) && n%23==4 \\ _Charles R Greathouse IV_, Jul 03 2016 %Y A141909 Cf. A000040, A040984, A141908, A100201. %K A141909 nonn,easy %O A141909 1,1 %A A141909 _N. J. A. Sloane_, Jul 11 2008