cp's OEIS Frontend

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.

A200769 Number of n X n 0..2 arrays with every row and column running average nondecreasing rightwards and downwards, and the number of instances of each value within one of each other.

Original entry on oeis.org

3, 5, 13, 342, 7725, 91755, 17965438, 2189118202, 159001066390
Offset: 1

Views

Author

R. H. Hardin, Nov 22 2011

Keywords

Comments

Diagonal of A200777.

Examples

			Some solutions for n=4
..0..0..1..1....0..0..0..0....0..0..0..1....0..0..0..1....0..0..0..0
..0..2..1..2....0..0..1..2....0..0..2..1....0..0..1..1....0..1..1..2
..0..1..1..2....1..1..2..2....0..2..1..1....0..1..1..2....0..1..1..1
..0..2..1..2....1..1..2..2....1..2..2..2....2..2..2..2....2..2..2..2
		

Crossrefs

Cf. A200777.