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 A308221 #15 May 25 2019 19:25:05 %S A308221 3,6,8,11,11,16,13,19,19,22,16,29,18,26,29,31,21,38,22,41,37,32,25,51, %T A308221 33,36,41,49,27,58,28,51,44,42,49,69,28,45,51,71,31,74,32,61,69,48,36, %U A308221 87,48,67,58,68,36,82,66,85,62,54,41,109,33,57,86,82,69,89,40,80,71,98,44,121,38,59,91,84,77,101,46,118,81,62,52,139,79,65,79,106,49,138,80,89,77,70,83,143,47,98,107,128 %N A308221 Number of Egyptian fractions of denominator n which are sum of 3 unit fractions. %H A308221 Cyril Banderier, Florian Luca, Francesco Pappalardi, <a href="https://lipn.fr/~cb/Papers/EgyptianFractions.pdf">Numerators of Egyptian fractions</a>, 2019. %e A308221 There are a(1) = 3 Egyptian fractions with denominator n = 1 which are sums of 3 unit fractions: 1/1 = 1/3 + 1/3 + 1/3, 2/1 = 1/1 + 1/2 + 1/2, and 3/1 = 1/1 + 1/1 + 1/1. %Y A308221 Cf. A308219, A308220, A308415 %K A308221 nonn %O A308221 1,1 %A A308221 _Cyril Banderier_, May 15 2019