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 A131650 #26 Jun 14 2022 07:00:40 %S A131650 1,2,3,4,5,6,7,8,9,1,2,3,4,5,6,7,8,9,10,2,3,4,5,6,7,8,9,10,11,3,4,5,6, %T A131650 7,8,9,10,11,12,4,5,6,7,8,9,10,11,12,13,5,6,7,8,9,10,11,12,13,14,1,2, %U A131650 3,4,5,6,7,8,9,10,2,3,4,5,6,7,8,9,10,11,3,4 %N A131650 Number of symbols in Babylonian numeral representation of n. %C A131650 From _Wolfdieter Lang_, Feb 21 2017: (Start) %C A131650 For a(1)..a(59) this sequence coincides with A007953. %C A131650 For the sexagesimal - decimal representation of n see A055643. %C A131650 The values of the positions is given in A281863. %C A131650 The sum of the digits of A055643(n) = a(n). %C A131650 The number of digits of the representation of n is given in A282622. (End) %H A131650 Wolfdieter Lang, <a href="/A131650/b131650.txt">Table of n, a(n) for n = 1..10000</a> %H A131650 University of St Andrews, <a href="https://mathshistory.st-andrews.ac.uk/HistTopics/Babylonian_numerals/">Babylonian numerals</a>. %H A131650 Wikipedia, <a href="http://en.wikipedia.org/wiki/Babylonian_numerals">Babylonian numerals</a>. %H A131650 Yale Babylonian Collection, <a href="http://www.math.ubc.ca/%7Ecass/Euclid/ybc/ybc.html">High resolution photographs, descriptions and analysis of the root(2) tablet (YBC 7289)</a>. %Y A131650 Cf. A006968, A007953, A055643, A281863, A282622. %K A131650 nonn,base,easy %O A131650 1,2 %A A131650 Alain Van Kerckhoven (alain(AT)avk.org), Sep 10 2007 %E A131650 More terms from _Michel Marcus_, Jul 12 2013 %E A131650 Terms a(60)-a(81) from _Wolfdieter Lang_, Feb 21 2017 (to distinguish it from A007953)