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 A091523 #21 Jul 19 2025 23:13:37 %S A091523 8,12,17,24,34,48,68,96,136,193,273,386,546,772,1092,1545,2185,3090, %T A091523 4370,6180,8740,12360,17480,24721,34961,49443,69923,98886,139846, %U A091523 197772,279692,395544,559384,791089,1118769,1582179,2237539,3164358 %N A091523 Graham-Pollak sequence with initial term 8. %H A091523 Seiichi Manyama, <a href="/A091523/b091523.txt">Table of n, a(n) for n = 1..500</a> %H A091523 Th. Stoll, <a href="https://cs.uwaterloo.ca/journals/JIS/VOL8/Stoll/stoll56.html">On Families of Nonlinear Recurrences Related to Digits</a>, Journal of Integer Sequences, Vol. 8 (2005), Article 05.3.2. %H A091523 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/Graham-PollakSequence.html">Graham-Pollak Sequence</a> %F A091523 See A001521. %Y A091523 Cf. A001521, A091522. %K A091523 nonn %O A091523 1,1 %A A091523 _Eric W. Weisstein_, Jan 18 2004