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 A339629 #6 Dec 10 2020 16:47:12 %S A339629 0,1,0,0,0,0,0,0,0,0,0,6,0,0,0,0,0,0,0,0,0,0,0,0,24,0,0,0,0,0,24,24, %T A339629 24,0,0,0,0,24,120,0,0,0,0,120,0,240,0,0,0,0,840,0,720,120,24,120,0, %U A339629 1440,0,720,720,120,840,0,2280,720,960,1080,0,840,0,11760,0,5040,1440,720 %N A339629 Number of compositions (ordered partitions) of n into distinct parts such that the sum of reciprocals of parts is 1. %C A339629 Also the number of ordered ways to express 1 as the sum of distinct unit fractions such that the sum of the denominators is n. %H A339629 <a href="/index/Com#comp">Index entries for sequences related to compositions</a> %H A339629 <a href="/index/Ed#Egypt">Index entries for sequences related to Egyptian fractions</a> %e A339629 a(11) = 6 because we have 2 + 3 + 6 = 2 + 6 + 3 = 3 + 2 + 6 = 3 + 6 + 2 = 6 + 2 + 3 = 6 + 3 + 2 = 11 and 1/2 + 1/3 + 1/6 = 1. %Y A339629 Cf. A051907, A051908, A058360, A339627, A339628. %K A339629 nonn %O A339629 0,12 %A A339629 _Ilya Gutkovskiy_, Dec 10 2020