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 A039805 #9 Dec 19 2015 13:09:18 %S A039805 1,3,1,6,3,1,13,9,3,1,23,19,9,3,1,44,42,22,9,3,1,74,80,48,22,9,3,1, %T A039805 129,154,99,51,22,9,3,1,210,273,193,105,51,22,9,3,1,345,484,362,212, %U A039805 108,51,22,9,3,1,542,815,651,401,218,108,51,22,9,3,1,858,1369,1147 %N A039805 Matrix cube of partition triangle A008284. %C A039805 Row sums form A022812 (number of terms in n-th derivative of a function composed with itself 4 times). - _Paul D. Hanna_, Jul 13 2004 %e A039805 1; 3,1; 6,3,1; 13,9,3,1; ... %Y A039805 Cf. A038497, A038498, A039806, A039807. a(n, 1) = A022811(n) (first column). %Y A039805 Cf. A022812. %K A039805 nonn,tabl %O A039805 1,2 %A A039805 _Christian G. Bower_, Feb 15 1999