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 A141885 #12 Sep 08 2022 08:45:35 %S A141885 13,53,73,113,173,193,233,293,313,353,373,433,593,613,653,673,733,773, %T A141885 853,953,1013,1033,1093,1153,1193,1213,1373,1433,1453,1493,1553,1613, %U A141885 1693,1733,1753,1873,1913,1933,1973,1993,2053,2113,2153,2213,2273,2293,2333,2393 %N A141885 Primes congruent to 13 mod 20. %H A141885 Vincenzo Librandi, <a href="/A141885/b141885.txt">Table of n, a(n) for n = 1..1000</a> %F A141885 a(n) ~ 8n log n. - _Charles R Greathouse IV_, Jul 02 2016 %t A141885 Select[Range[13,5000,20],PrimeQ[#]&] (* _Vladimir Joseph Stephan Orlovsky_, Mar 31 2011*) %o A141885 (Magma) [p: p in PrimesUpTo(3000) | p mod 20 eq 13 ]; // _Vincenzo Librandi_, Aug 16 2012 %o A141885 (PARI) is(n)=isprime(n) && n%20==13 \\ _Charles R Greathouse IV_, Jul 02 2016 %Y A141885 Cf. A000040, A105854, A141881, A141882, A141883. %K A141885 nonn,easy %O A141885 1,1 %A A141885 _N. J. A. Sloane_, Jul 11 2008