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 A139479 #6 Oct 17 2024 08:25:04 %S A139479 0,1,5,25,53,184,4604,1001524 %N A139479 Numbers k such that 24*k+7 is a term of A000043. %t A139479 Select[(MersennePrimeExponent[Range[48]] - 7) / 24, IntegerQ] (* _Amiram Eldar_, Oct 17 2024 *) %Y A139479 Cf. A000043, A000668, A124477. %K A139479 nonn,more %O A139479 1,3 %A A139479 _Artur Jasinski_, Apr 22 2008