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 A298021 #19 Aug 08 2025 06:40:33 %S A298021 1,3,2,70,120,357,41496,2016,43605,1180300,17472840,601495180, %T A298021 525594160,58565520300,74066256,3999303586720,8733019680,274477212900, %U A298021 392291457008100,56011301214120,31297881399400,12003126367152512883720,5673579586816030200,1466117956976400,186018119917880598413465400 %N A298021 Maximal overhang that can be attained from a stack of blocks of lengths 1,2,...,n (denominators). %C A298021 Data supplied by David Treeby. %C A298021 For the classical problem when there are n blocks all of the same length see A001108/A002805 and A065071. %H A298021 David Treeby, <a href="/A298021/b298021.txt">Table of n, a(n) for n = 1..75</a> %H A298021 David Treeby, <a href="/A298020/a298020.txt">Mathematica code</a> %H A298021 David Treeby, <a href="https://www.jstor.org/stable/48661222">Further Thoughts on a Paradoxical Tower</a>, The American Mathematical Monthly 125.1 (2018): 44-60. %e A298021 The maximal overhangs are 1, 8/3, 9/2, 463/70, 1057/120, 4010/357, 570097/41496, 32903/2016, 828667/43605, 25743541/1180300, 431266313/17472840, 16610986697/601495180, ... %t A298021 (* See link. *) %Y A298021 For numerators see A298020. %Y A298021 Cf. A001108/A002805, A065071. %K A298021 nonn,frac %O A298021 1,2 %A A298021 _N. J. A. Sloane_, Jan 15 2018