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 A141882 #14 Jan 08 2023 11:39:16 %S A141882 7,47,67,107,127,167,227,307,347,367,467,487,547,587,607,647,727,787, %T A141882 827,887,907,947,967,1087,1187,1307,1327,1367,1427,1447,1487,1567, %U A141882 1607,1627,1667,1747,1787,1847,1867,1907,1987,2027,2087,2207,2267,2287,2347,2447 %N A141882 Primes congruent to 7 mod 20. %H A141882 Vincenzo Librandi, <a href="/A141882/b141882.txt">Table of n, a(n) for n = 1..1000</a> %t A141882 Select[Range[7,5000,20],PrimeQ[#]&] (* _Vladimir Joseph Stephan Orlovsky_, Mar 31 2011*) %t A141882 Select[Prime[Range[400]],Mod[#,20]==7&] (* _Harvey P. Dale_, Jan 08 2023 *) %o A141882 (Magma) [p: p in PrimesUpTo(3000) | p mod 20 eq 7 ]; // _Vincenzo Librandi_, Aug 16 2012 %o A141882 (PARI) is(n)=isprime(n) && n%20==7 \\ _Charles R Greathouse IV_, Jul 01 2016 %Y A141882 Cf. A000040, A105854, A141881, A141883. %K A141882 nonn,easy %O A141882 1,1 %A A141882 _N. J. A. Sloane_, Jul 11 2008