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 A295571 #16 Apr 05 2020 04:51:11 %S A295571 0,1,3,9,25,68,185,503,1368,3719,10110,27482,74704,203067,551994, %T A295571 1500476,4078717,11087103,30137871,81923227,222690420,605335322, %U A295571 1645472006,4472856654,12158484964,33050188740,89839727479,244209698680,663830786256,1804479163452,4905082919845 %N A295571 a(n) = A081881(n) - 1. %C A295571 The blocks of fractions described in A081881 extend from 1/A081881(k) through 1/a(k+1) and contain A295572(k) terms. For example the third block is 1/4 + 1/5 + 1/6 + 1/7 + 1/8 + 1/6 and has length 6. %H A295571 Jinyuan Wang, <a href="/A295571/b295571.txt">Table of n, a(n) for n = 1..1000</a> %Y A295571 Cf. A081881, A295572. %K A295571 nonn %O A295571 1,3 %A A295571 _N. J. A. Sloane_, Nov 30 2017 %E A295571 More terms from _Jinyuan Wang_, Feb 20 2020