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 A304722 #22 Jul 02 2018 23:39:35 %S A304722 2,7,93,62095,4699899044,1362649441404437841952, %T A304722 4130413532696748407987517870209604665529390, %U A304722 36989955466818654815296233286537259039977157978192273501528892262212989509848377838825 %N A304722 Denominators of sign-alternating Egyptian fraction expansion for 1/e. %e A304722 a(0) = 2 because 1/e is between 1/2 and 1/3 and 1/2 > 1/e, i.e., floor(1/(1/e)) = 2, and %e A304722 a(1) = 7 because floor(1/(1/a(0) - 1/e)). %Y A304722 Cf. A006526, A006525. %K A304722 nonn,frac,easy %O A304722 0,1 %A A304722 _Greg Huber_, May 17 2018