A229778 Number of 6X6 0..n arrays with rows in lexicographically nondecreasing order and columns in nonincreasing order.

924, 1976588468, 90462380211862, 322942973130396495, 245200063296427870294, 65350451915118676316696, 8161432175844147542615052, 573385480689864447112662651, 25636132281885860529849116700

Offset: 1

Author

R. H. Hardin, Sep 29 2013

Keywords

• nonn

Comments

Row 6 of A229774

Examples

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