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 A378822 #11 Dec 21 2024 00:53:44 %S A378822 1,2,6,3,9,12,4,15,18,7,5,21,24,27,30,10,33,8,36,39,42,13,45,48,51,11, %T A378822 16,54,57,60,63,19,66,69,14,72,22,75,78,81,25,17,84,87,90,93,28,96,99, %U A378822 102,20,105,31,108,111,114,34,23,117,120,123,37,126,129,132,26 %N A378822 Inverse permutation to A378821. %H A378822 Michael S. Branicky, <a href="/A378822/b378822.txt">Table of n, a(n) for n = 1..10000</a> %e A378822 A378821(6) = 3, so a(3) = 6. %Y A378822 Cf. A378821, A081146, A091023. %K A378822 nonn %O A378822 1,2 %A A378822 _Neal Gersh Tolunsky_, Dec 08 2024