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 A108590 #9 Feb 16 2025 08:32:58 %S A108590 2,1,5,8,3,11,13,4,16,19,6,22,7,24,27,9,30,33,10,35,38,12,41,14,44,46, %T A108590 15,49,52,17,55,57,18,60,20,63,66,21,68,71,23,74,77,25,79,26,82,85,28, %U A108590 88,90,29,93,96,31,99,32,101,104,34,107,110,36,112,115,37,118,39,121 %N A108590 Self-inverse integer permutation induced by Beatty sequences for Pi/2 and Pi/(Pi-2). %H A108590 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/BeattySequence.html">Beatty Sequence</a> %H A108590 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %H A108590 <a href="/index/Be#Beatty">Index entries for sequences related to Beatty sequences</a> %F A108590 a(A140758(n))=A108589(n) and a(A108589(n))=A140758(n). %Y A108590 Cf. A108591, A108592. %K A108590 nonn %O A108590 1,1 %A A108590 _Reinhard Zumkeller_, Jun 11 2005