A251150 Number of (n+1)X(n+1) 0..2 arrays with no 2X2 subblock having the minimum of its diagonal elements greater than the absolute difference of its antidiagonal elements

65, 8407, 6441563, 29975340928, 835576868190958, 140510035307275968193, 142076030393678638383737655, 865077266113415921594160660031079, 31698615993472306460013429967595879535805

Offset

1,1

Comments

Diagonal of A251158

Links

Table of n, a(n) for n=1..9.

Example

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

Crossrefs

Sequence in context: A282839 A144661 A296144 * A176370 A093265 A264541

Adjacent sequences: A251147 A251148 A251149 * A251151 A251152 A251153

Keyword

nonn

Author

R. H. Hardin, Nov 30 2014

Status

approved