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A251020 Number of (n+1)X(n+1) 0..3 arrays with no 2X2 subblock having the sum of its diagonal elements greater than the maximum of its antidiagonal elements 0
110, 2546, 20608, 119632, 516684, 2160510, 7948184, 29146692, 100696896, 345190686, 1144782282, 3748752570, 12009496342, 37949629638 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Diagonal of A251028
LINKS
EXAMPLE
Some solutions for n=4
..0..1..1..1..2....0..1..1..1..3....0..0..0..0..3....0..0..1..1..3
..0..0..0..0..1....0..0..0..0..2....0..0..0..0..3....3..0..1..0..2
..2..2..2..2..2....0..0..0..0..1....1..1..1..1..2....3..0..1..0..2
..1..0..0..0..0....0..0..0..0..0....2..0..0..0..1....3..0..1..0..1
..2..0..0..0..0....3..3..2..2..1....3..1..1..0..0....3..0..1..0..0
CROSSREFS
Sequence in context: A205348 A008450 A163729 * A245876 A185536 A201833
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 29 2014
STATUS
approved

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Last modified March 28 14:38 EDT 2024. Contains 371254 sequences. (Running on oeis4.)