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 A038497 #9 Dec 19 2015 12:17:13 %S A038497 1,2,1,3,2,1,5,5,2,1,7,8,5,2,1,11,15,10,5,2,1,15,23,18,10,5,2,1,22,38, %T A038497 31,20,10,5,2,1,30,56,52,34,20,10,5,2,1,42,86,83,60,36,20,10,5,2,1,56, %U A038497 123,129,97,63,36,20,10,5,2,1,77,181,198,158,105,65,36,20,10,5,2,1 %N A038497 Matrix square of partition triangle A008284. %C A038497 Row sums form A022811 (number of terms in n-th derivative of a function composed with itself 3 times). - _Paul D. Hanna_, Jul 13 2004 %e A038497 1; 2,1; 3,2,1; 5,5,2,1; ... %Y A038497 Cf. A038498, A039800-A039809. a(n, 1) = A000041(n) (first column) (partition numbers). %Y A038497 Cf. A022811. %K A038497 nonn,tabl %O A038497 1,2 %A A038497 _Christian G. Bower_, Feb 15 1999