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 A141997 #17 Sep 08 2022 08:45:35 %S A141997 79,137,311,601,659,1123,1181,1297,1471,1877,1993,2341,2399,2689,3037, %T A141997 3559,3617,3733,3907,4139,4603,4951,5009,5531,5647,5821,5879,6053, %U A141997 6343,6691,7039,7213,7561,7793,8431,8663,8779,8837,9011,9127,9533,9649,10867,11273 %N A141997 Primes congruent to 21 mod 29. %H A141997 Vincenzo Librandi, <a href="/A141997/b141997.txt">Table of n, a(n) for n = 1..1000</a> %F A141997 a(n) ~ 28n log n. - _Charles R Greathouse IV_, Jul 03 2016 %t A141997 Select[Range[21,20000,29],PrimeQ] (* _Vladimir Joseph Stephan Orlovsky_, Apr 07 2011 *) %o A141997 (Magma) [p: p in PrimesUpTo(12000) | p mod 29 eq 21 ]; // _Vincenzo Librandi_, Aug 17 2012 %o A141997 (PARI) is(n)=isprime(n) && n%29==21 \\ _Charles R Greathouse IV_, Jul 03 2016 %Y A141997 Cf. A000040, A141977, A141978. %K A141997 nonn,easy %O A141997 1,1 %A A141997 _N. J. A. Sloane_, Jul 11 2008