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 A305836 #33 Jul 21 2021 00:43:25 %S A305836 0,1,2,4,6,10,12,30,78,244,490,760,1808,4790,34330 %N A305836 Numbers k such that (2^k-1)^4 + 2 is prime. %C A305836 a(16) > 10^5. - _Robert Price_, Jul 21 2018 %t A305836 Select[Range@ 2000, PrimeQ[(2^# - 1)^4 + 2] &] (* _Michael De Vlieger_, Jun 11 2018 *) %o A305836 (PARI) is(n)=ispseudoprime((2^n-1)^4+2) %Y A305836 Cf. A128832 ((2^n-1)^4). %K A305836 nonn,more %O A305836 1,3 %A A305836 _Patrick C. Schneider_, Jun 11 2018 %E A305836 a(14) from _Vaclav Kotesovec_, Jun 16 2018 %E A305836 a(15) from _Robert Price_, Jun 20 2018