A251307 Number of (n+1)X(7+1) 0..3 arrays with no 2X2 subblock having the sum of its diagonal elements less than the maximum of its antidiagonal elements

488885832, 5277635529521, 55435729766236658, 583546015909703620443, 6144539969766873395808341, 64691402985380930946801585128, 681079080998875086480109996361925, 7170607719188781373932332192382847810

Offset

1,1

Comments

Column 7 of A251308

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions for n=1
..0..0..1..0..1..2..0..2....0..0..1..0..1..1..2..1....0..0..0..0..0..0..2..1
..0..0..1..2..2..2..0..3....0..0..1..0..2..1..3..1....0..0..0..0..2..2..3..2

Crossrefs

Sequence in context: A181728 A233840 A203671 * A287550 A216011 A101641

Adjacent sequences: A251304 A251305 A251306 * A251308 A251309 A251310

Keyword

nonn

Author

R. H. Hardin, Dec 01 2014

Status

approved