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 A368577 #17 Mar 29 2025 00:23:32 %S A368577 0,1,2,3,4,5,6,8,7,9,10,16,11,12,17,13,18,14,19,20,15,21,32,22,24,33, %T A368577 23,25,34,64,26,35,36,65,27,28,37,66,29,38,40,67,68,30,39,41,69,128, %U A368577 31,42,48,70,72,129,43,44,49,71,73,130,256,45,50,74,80,131,132,257 %N A368577 Irregular table T(n, k), n >= 0, k = 1..A036497(n), read by rows; the n-th row lists the numbers m such that A331835(m) = n. %C A368577 As a flat sequence, this is a permutation of the nonnegative integers (with inverse A368578). %H A368577 Rémy Sigrist, <a href="/A368577/b368577.txt">Table of n, a(n) for n = 0..10888</a> (rows for n = 0..104 flattened) %H A368577 Rémy Sigrist, <a href="/A368577/a368577.gp.txt">PARI program</a> %H A368577 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %F A368577 T(n, 1) = A345297(n). %F A368577 T(n, A036497(n)) = A200947(n). %e A368577 Table T(n, k) begins: %e A368577 n n-th row %e A368577 -- ------------------ %e A368577 0 0 %e A368577 1 1 %e A368577 2 2 %e A368577 3 3, 4 %e A368577 4 5 %e A368577 5 6, 8 %e A368577 6 7, 9 %e A368577 7 10, 16 %e A368577 8 11, 12, 17 %e A368577 9 13, 18 %e A368577 10 14, 19, 20 %e A368577 11 15, 21, 32 %e A368577 12 22, 24, 33 %e A368577 13 23, 25, 34, 64 %e A368577 14 26, 35, 36, 65 %e A368577 15 27, 28, 37, 66 %e A368577 16 29, 38, 40, 67, 68 %o A368577 (PARI) \\ See Links section. %Y A368577 Cf. A036497, A200947, A331835, A345101, A345297, A368578 (inverse). %K A368577 nonn,base,tabf %O A368577 0,3 %A A368577 _Rémy Sigrist_, Dec 31 2023