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 A142024 #14 Sep 08 2022 08:45:35 %S A142024 113,547,733,857,919,1229,1291,1601,1663,1787,1973,2221,2531,2593, %T A142024 2903,3089,3461,3709,3833,4019,4391,4639,5011,5197,5507,5569,5693, %U A142024 5879,6871,7057,7243,8111,8297,8669,8731,9041,9103,9227,9413,9661,10343,10529,11087 %N A142024 Primes congruent to 20 mod 31. %H A142024 Vincenzo Librandi, <a href="/A142024/b142024.txt">Table of n, a(n) for n = 1..1000</a> %F A142024 a(n) ~ 30n log n. - _Charles R Greathouse IV_, Jul 03 2016 %t A142024 Select[Range[20,20000,31],PrimeQ] (* _Vladimir Joseph Stephan Orlovsky_, Apr 30 2011 *) %t A142024 Select[Prime[Range[1400]],Mod[#,31]==20&] (* _Harvey P. Dale_, Jul 30 2020 *) %o A142024 (Magma) [p: p in PrimesUpTo(12000) | p mod 31 eq 20 ]; // _Vincenzo Librandi_, Aug 17 2012 %o A142024 (PARI) is(n)=isprime(n) && n%31==20 \\ _Charles R Greathouse IV_, Jul 03 2016 %Y A142024 Cf. A000040, A142005, A142006, A142023. %K A142024 nonn,easy %O A142024 1,1 %A A142024 _N. J. A. Sloane_, Jul 11 2008