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A251193
Number of (n+1)X(n+1) 0..1 arrays with no 2X2 subblock having the minimum of its diagonal elements less than the absolute difference of its antidiagonal elements
1
10, 86, 1654, 73170, 7392190, 1688254298, 871573835362, 1016396169840162, 2677928828235940878, 15939286491629789077436, 214333474893685389914820434, 6511102783725658099829377229314, 446854251204340727817177223022169346
OFFSET
1,1
COMMENTS
Diagonal of A251201
LINKS
EXAMPLE
Some solutions for n=4
..0..1..1..1..1....1..1..0..1..0....0..1..0..1..1....0..1..1..1..0
..1..1..1..0..1....1..0..1..1..1....1..0..1..0..1....1..1..1..0..1
..1..1..1..1..1....1..1..0..1..0....0..1..1..1..0....1..1..0..1..0
..1..1..1..1..1....1..1..1..0..1....1..0..1..1..1....1..0..1..0..0
..1..1..1..1..0....0..1..0..1..1....1..1..0..1..1....1..1..0..0..0
CROSSREFS
Sequence in context: A321853 A264174 A218894 * A198858 A331793 A121115
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 30 2014
STATUS
approved