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 A372072 #11 Jun 21 2024 20:41:38 %S A372072 1,2,3,4,9,10,11,6,5,12,24,16,25,8,7,14,35,18,36,20,13,22,51,26,15,28, %T A372072 21,30,61,37,62,32,29,39,17,45,73,34,23,41,85,47,91,43,31,49,99,52,19, %U A372072 54,33,56,114,63,27,58,40,65,126,74,127,60,42,67,44,76,139 %N A372072 Where n appears in A373390, or -1 if n never appears there. %H A372072 Michael De Vlieger, <a href="/A372072/b372072.txt">Table of n, a(n) for n = 1..10000</a> %Y A372072 Cf. A373390, A372073, A372078-A372081, A373786-A373791. %K A372072 nonn %O A372072 1,2 %A A372072 _N. J. A. Sloane_, Jun 06 2024 %E A372072 More terms from _Michael De Vlieger_, Jun 07 2024