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 A380223 #12 Jan 20 2025 09:07:05 %S A380223 8,11,14,18,22,26,29,32,38,40,41,45,49,50,55,56,61,64,67,76,80,84,85, %T A380223 90,91,96,97,116,127,128,129,139,150,172,173,174,175,197,198,199,200, %U A380223 202,203,204,207,222,223,246,247,250,262,264,276,289,290,301,302,304,307,313 %N A380223 Positions of ones in A379880. %H A380223 Paolo Xausa, <a href="/A380223/b380223.txt">Table of n, a(n) for n = 1..1000</a> %t A380223 (* A377091list is defined at A377091 *) %t A380223 Flatten[Position[Map[Length, Most[Split[A377091list[1500], Abs[#2 - #1] == 1 &]]], 1]] (* _Paolo Xausa_, Jan 20 2025 *) %Y A380223 Cf. A377091, A379880, A380224, A380225. %K A380223 nonn %O A380223 1,1 %A A380223 _Paolo Xausa_, Jan 18 2025