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 A331624 #12 Feb 07 2020 16:39:59 %S A331624 2,4,5,6,13,9,18,19,17,20,26,30,35,23,47,50,60,41,7,42,21,37,49,38,31, %T A331624 44,67,55,80,79,100,106,74,29,72,65,78,101,86,99,52,77,45,75,96,141, %U A331624 128,105,157,180,61,182,190,135,154,121,120,146,111,27,112,158,132,28,174 %N A331624 Distinct values in A309681, in order of appearance. %H A331624 Samuel B. Reid, <a href="/A331624/b331624.txt">Table of n, a(n) for n = 1..10000</a> %Y A331624 Cf. A309681. %K A331624 nonn %O A331624 1,1 %A A331624 _Samuel B. Reid_, Jan 22 2020