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 A036072 #4 Oct 24 2015 17:08:11 %S A036072 1,1,1,1,2,2,3,4,5,6,9,11,15,18,23,30,37,47,58,71,90 %N A036072 Erroneous version of A002569. %H A036072 T. S. Motzkin, <a href="/A000262/a000262.pdf">Sorting numbers for cylinders and other classification numbers</a>, in Combinatorics, Proc. Symp. Pure Math. 19, AMS, 1971, pp. 167-176 (p. 172, gives a(9) incorrectly as 6; it should be 7). [Annotated, scanned copy] %K A036072 dead %O A036072 0,5