A186909 Number of (n+2)X5 0..6 arrays with each 3X3 subblock having rows and columns in lexicographically nondecreasing order.

1276581035, 99241308567, 4813465754996, 171334955820947, 4805827783188400, 110909004238159456, 2169936652932512523, 36804096662464163093, 550615265988952206164, 7367827886026471340866, 89189622390253052611607

Offset: 1

Author

R. H. Hardin Feb 28 2011

Keywords

• nonn

Comments

Column 3 of A186915

Examples

			Some solutions for 4X5
..0..0..0..0..6....0..0..0..1..2....0..0..0..0..1....0..0..0..0..2
..0..0..0..0..6....0..0..0..2..2....0..0..0..1..4....0..0..0..2..5
..0..0..0..6..4....0..0..0..3..4....0..0..0..2..2....0..0..0..4..0
..0..0..0..6..5....0..0..0..6..2....0..0..0..6..6....0..0..0..4..0
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..200
• R. H. Hardin, Polynomial of degree 95

Formula

Polynomial of degree 95 in n, see link.