

A250979


Number of (n+1) X (5+1) 0..2 arrays with no 2 X 2 subblock having the sum of its diagonal elements less than the absolute difference of its antidiagonal elements.


1



280728, 120515358, 51487962431, 22020178055066, 9416933752243198, 4027179649653568467, 1722239421934657361988, 736522541298498562329652, 314976772820106600258421647, 134701061664914227033369089905
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OFFSET

1,1


COMMENTS



LINKS



EXAMPLE

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


CROSSREFS



KEYWORD

nonn


AUTHOR



STATUS

approved



