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 A285576 #5 Apr 24 2017 00:14:03 %S A285576 1,3,10,5,16,12,23,7,6,14,31,9,33,25,18,20,52,4,54,15,27,37,62,11,8, %T A285576 35,21,22,64,13,70,39,29,58,42,2,72,56,46,17,118,26,124,30,19,60,126, %U A285576 28,40,36,50,34,132,38,80,24,76,66,153,41,155,68,43,44,82,48 %N A285576 Inverse permutation to A285575. %H A285576 Rémy Sigrist, <a href="/A285576/b285576.txt">Table of n, a(n) for n = 1..10000</a> %H A285576 Rémy Sigrist, <a href="/A285576/a285576.gp.txt">PARI program for A285576</a> %H A285576 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %e A285576 A285575(1) = 1, hence a(1) = 1. %e A285576 A285575(2) = 36, hence a(36) = 2. %e A285576 A285575(3) = 2, hence a(2) = 3. %e A285576 A285575(4) = 18, hence a(18) = 4. %e A285576 A285575(5) = 4, hence a(4) = 5. %e A285576 A285575(6) = 9, hence a(9) = 6. %e A285576 A285575(7) = 8, hence a(8) = 7. %e A285576 A285575(8) = 25, hence a(25) = 8. %e A285576 A285575(9) = 12, hence a(12) = 9. %Y A285576 Cf. A285575. %K A285576 nonn %O A285576 1,2 %A A285576 _Rémy Sigrist_, Apr 22 2017