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 A142405 #11 Aug 10 2024 15:56:19
%S A142405 23,71,167,263,311,359,503,599,647,743,839,887,983,1031,1223,1319,
%T A142405 1367,1511,1559,1607,1847,2039,2087,2423,2663,2711,2903,2999,3191,
%U A142405 3527,3623,3671,3719,3767,3863,3911,4007,4391,4583,4679,4871,4919,4967,5303,5351
%N A142405 Primes congruent to 23 mod 48.
%H A142405 Vincenzo Librandi, <a href="/A142405/b142405.txt">Table of n, a(n) for n = 1..1000</a>
%F A142405 a(n) ~ 16n log n. - _Charles R Greathouse IV_, Jul 03 2016
%t A142405 Select[Prime[Range[1000]], MemberQ[{23}, Mod[#, 48]] &] (* _Vincenzo Librandi_, Aug 27 2012 *)
%t A142405 Select[Range[23,6000,48],PrimeQ] (* _Harvey P. Dale_, Aug 10 2024 *)
%o A142405 (Magma) [p: p in PrimesUpTo(6000) | p mod 48 eq 23]; // _Vincenzo Librandi_, Aug 27 2012
%o A142405 (PARI) is(n)=isprime(n) && n%48==23 \\ _Charles R Greathouse IV_, Jul 03 2016
%Y A142405 Cf. A000040.
%K A142405 nonn,easy
%O A142405 1,1
%A A142405 _N. J. A. Sloane_, Jul 11 2008