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 A328799 #25 Nov 15 2021 17:32:46 %S A328799 23,47,1439,2879,11279,51599,209519,243119,349199,507359,700319, %T A328799 903359,1190639,1342079,1650959,1956719,2978399,3304079,3376559, %U A328799 3841679,4858559,5404319,5454719,6207599,6486479,7682399,7825439,8169599,8826479,8970959,9546959 %N A328799 Primes p that are simultaneously of the forms 2*q+1, 4*r+3, 6*s+5 and 8*t+7 where q,r,s,t are primes. %C A328799 All terms == 23 (mod 24). All but the first == 47 (mod 48). %H A328799 Robert Israel, <a href="/A328799/b328799.txt">Table of n, a(n) for n = 1..2000</a> %e A328799 a(3)=1439 is a term because 1439=2*719+1=4*359+3=6*239+5=8*179+7 and 1439, 719, 359, 239 and 179 are all primes. %p A328799 map(t -> 24*t+23, select(k -> andmap(isprime, [3*k+2,4*k+3,6*k+5,12*k+11,24*k+23]), [0, seq(k,k=1..10^6,2)])); %Y A328799 Cf. A005385, A066179, A157358. %K A328799 nonn %O A328799 1,1 %A A328799 _J. M. Bergot_ and _Robert Israel_, Nov 18 2019 %E A328799 Clarified definition. - _N. J. A. Sloane_, Nov 15 2021