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 A152488 #14 Dec 02 2018 10:55:32
%S A152488 0,1,2,4,7,7,9,12,19,17,18,20,24,23,27,32,47,41,40,43,45,42,47,52,60,
%T A152488 54,54,58,67,63,71,80,111,97,92,97,96,89,95,105,109,98,96,102,112,106,
%U A152488 117,128,144,129,122,128,130,123,130,142,161,145,143,152,169
%N A152488 Sums of rows of the triangle in A152487.
%H A152488 Alois P. Heinz, <a href="/A152488/b152488.txt">Table of n, a(n) for n = 0..1023</a>
%H A152488 Wikipedia, <a href="https://en.wikipedia.org/wiki/Levenshtein_distance">Levenshtein Distance</a>
%F A152488 a(n) = Sum_{k=0..n} A152487(n,k).
%Y A152488 Cf. A152487.
%K A152488 nonn
%O A152488 0,3
%A A152488 _Reinhard Zumkeller_, Dec 06 2008