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A207295 Number of (n+1)X(n+1) 0..3 arrays with rows and columns of determinants of all 2X2 subblocks lexicographically nondecreasing 0
256, 93991, 158967751, 1951282415919, 189688562729242206 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A207300

LINKS

Table of n, a(n) for n=1..5.

EXAMPLE

Some solutions for n=4

..1..0..0..0..0....3..2..3..3..3....3..1..3..0..1....0..2..0..1..0

..3..0..1..3..1....0..0..0..0..0....2..0..0..0..0....2..0..0..3..2

..3..0..1..3..1....2..2..2..2..3....1..0..0..0..2....2..0..0..3..1

..1..0..0..0..0....1..1..1..1..2....0..0..1..0..3....2..2..0..1..0

..1..0..2..2..0....0..0..0..3..2....3..0..1..0..1....0..2..0..2..0

CROSSREFS

Sequence in context: A222101 A264347 A223199 * A205927 A223354 A236941

Adjacent sequences:  A207292 A207293 A207294 * A207296 A207297 A207298

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 16 2012

STATUS

approved

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Last modified May 24 06:14 EDT 2022. Contains 354005 sequences. (Running on oeis4.)