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 A358805 #64 Aug 02 2024 08:58:03 %S A358805 4,5,7,11,12,14,18,28,30,62,135,153,275,584,630,1424,1493,4419,8492, %T A358805 10950 %N A358805 Numbers k such that k! + (k!/2) + 1 is prime. %C A358805 Numbers k such that A070960(k)+1 is prime. %C A358805 No more terms < 10000. - _Vaclav Kotesovec_, Dec 12 2022 %H A358805 <a href="/A358805/b358805.txt">Table of n, a(n) for n = 1..19</a> %H A358805 Arsen Vardanyan, <a href="/A358805/a358805_4.txt">A list of prime numbers</a> %o A358805 (PARI) is(k) = isprime(k!+(k!/2)+1); %Y A358805 Cf. A070960, A358878. %K A358805 nonn,more %O A358805 1,1 %A A358805 _Arsen Vardanyan_, Dec 01 2022 %E A358805 a(18)-a(19) from _Vaclav Kotesovec_, Dec 09 2022 %E A358805 a(20) from _Michael S. Branicky_, Aug 02 2024