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 A383444 #11 May 02 2025 10:56:32 %S A383444 2,-3,2,-3,5,-7,-2,3,7,2,-11,-2,-2,17,-3,2,2,-17,-2,-2,23,2,-3,2,-23, %T A383444 -2,-2,29,2,2,-3,-29,-2,-2,37,-2,3,-37,-2,-2,43,2,-3,-41,-2,-2,47,2,2, %U A383444 -53,3,-2,-2,53,2,2,-59,-2,3,-2,59,2,2,-67,2,67,-3,2,-67,-2,71,-73,-2,3,73,2,-79,2,79,-3,2,2,-83,-2,-2,3,-2,89 %N A383444 First differences of A377090. %H A383444 N. J. A. Sloane, <a href="/A383444/b383444.txt">Table of n, a(n) for n = 0..9999</a> %t A383444 (* A377090list is defined at A377090 *) %t A383444 Differences[A377090list[100]] (* _Paolo Xausa_, May 02 2025 *) %Y A383444 Cf. A377090, A380311. %K A383444 sign %O A383444 0,1 %A A383444 _N. J. A. Sloane_, Apr 27 2025