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 A078583 #17 May 29 2025 17:40:23
%S A078583 3,11,19,24,26,61,96,175,189,312,483,741,4741,7082,8421,10695,14802,
%T A078583 18824,18892,20655,21653,39937,84160
%N A078583 Numbers k such that 2^k - prime(k) is prime.
%C A078583 a(23) is greater than 50000 - Sam Handler (sam_5_5_5_0(AT)yahoo.com), Dec 05 2004
%C A078583 a(24) is greater than 200000. - _Michael S. Branicky_, Jan 03 2025
%t A078583 Do[ If[ PrimeQ[2^n - Prime[n]], Print[n]], {n, 1, 10^5}]
%Y A078583 Corresponding prime(k) are in A078686.
%Y A078583 Cf. A077375.
%K A078583 nonn,more
%O A078583 1,1
%A A078583 _Robert G. Wilson v_, Nov 30 2002
%E A078583 a(14)-a(22) from Sam Handler (sam_5_5_5_0(AT)yahoo.com), Dec 05 2004
%E A078583 a(23) from _Michael S. Branicky_, Dec 31 2024