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 A109261 #14 Feb 16 2025 08:32:58 %S A109261 2,1,5,7,3,10,4,12,15,6,18,8,20,23,9,25,28,11,30,13,33,36,14,38,16,41, %T A109261 43,17,46,19,49,51,21,54,56,22,59,24,61,64,26,67,27,69,72,29,74,77,31, %U A109261 80,32,82,85,34,87,35,90,92,37,95,39,98,100,40,103 %N A109261 Self-inverse integer permutation induced by Beatty sequences for sqrt(2)^sqrt(2) and sqrt(2)^sqrt(2)/(sqrt(2)^sqrt(2)-1). %H A109261 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/BeattySequence.html">Beatty Sequence</a> %H A109261 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %H A109261 <a href="/index/Be#Beatty">Index entries for sequences related to Beatty sequences</a> %F A109261 a(A109259(n))=A109260(n) and a(A109260(n))=A109259(n). %Y A109261 Cf. A109259, A109260. %Y A109261 Cf. A078333 (sqrt(2)^sqrt(2)). %K A109261 nonn %O A109261 1,1 %A A109261 _Reinhard Zumkeller_, Jun 23 2005