A039805 Matrix cube of partition triangle A008284.

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, 129, 154, 99, 51, 22, 9, 3, 1, 210, 273, 193, 105, 51, 22, 9, 3, 1, 345, 484, 362, 212, 108, 51, 22, 9, 3, 1, 542, 815, 651, 401, 218, 108, 51, 22, 9, 3, 1, 858, 1369, 1147

Offset

1,2

Comments

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

Links

Table of n, a(n) for n=1..69.

Example

1; 3,1; 6,3,1; 13,9,3,1; ...

Crossrefs

Cf. A038497, A038498, A039806, A039807. a(n, 1) = A022811(n) (first column).

Cf. A022812.

Sequence in context: A131031 A130452 A133085 * A094504 A107884 A185628

Adjacent sequences: A039802 A039803 A039804 * A039806 A039807 A039808

Keyword

nonn,tabl

Author

Christian G. Bower, Feb 15 1999

Status

approved