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 A339628 #7 Dec 10 2020 16:47:04 %S A339628 1,1,0,0,0,0,0,0,0,0,0,6,24,0,0,0,0,0,0,0,0,0,0,0,24,120,0,0,0,0,24, %T A339628 144,144,120,0,0,0,24,240,720,0,0,0,120,720,240,1440,0,0,0,840,5760, %U A339628 720,5160,744,240,720,1440,10080,720,5760,5160,1560,5760,2280,16560,6000,7560 %N A339628 Number of compositions (ordered partitions) of n into distinct parts such that the sum of reciprocals of parts is an integer. %C A339628 Also the number of ordered ways to express an integer as the sum of distinct unit fractions such that the sum of the denominators is n. %H A339628 <a href="/index/Com#comp">Index entries for sequences related to compositions</a> %H A339628 <a href="/index/Ed#Egypt">Index entries for sequences related to Egyptian fractions</a> %e A339628 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 is an integer. %Y A339628 Cf. A051907, A051908, A058360, A339627, A339629. %K A339628 nonn %O A339628 0,12 %A A339628 _Ilya Gutkovskiy_, Dec 10 2020