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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.

A223638 Number of n X n 0..1 arrays with rows, columns, diagonals and antidiagonals unimodal.

Original entry on oeis.org

2, 16, 218, 2962, 36947, 428187, 4682514, 49045356, 497721760, 4944054774
Offset: 1

Views

Author

R. H. Hardin Mar 24 2013

Keywords

Comments

Diagonal of A223644

Examples

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

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