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 A281370 #11 Feb 28 2017 12:46:09 %S A281370 25,35,36,33,43,66,68,60,61,95,101,149,263,454,381,411,432,423,491, %T A281370 910,884,856,730,707,702,682,653,1277,2443,2605,2783,2802,2603,2588, %U A281370 2025,2154,1962,1692,1566,1577,1557,1729,970,946,912,867,786,741,490,478,422,369,404,344,337,578,568 %N A281370 Orbit of 25 under repeated applications of the inverse of the map m -> A280864(m). %C A281370 It is a strong conjecture that A280864 is a permutation of the positive integers. The orbit containing 25 appears to be the first infinite orbit. See A281370 for the orbit of 25 under the inverse permutation, and see A280864 for other orbits (there are several small cycles). %H A281370 N. J. A. Sloane, <a href="/A281370/b281370.txt">Table of n, a(n) for n = 1..436</a> %Y A281370 Cf. A280864, A281369. %K A281370 nonn,look %O A281370 1,1 %A A281370 _N. J. A. Sloane_, Feb 03 2017