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A235554 Number of (n+1)X(6+1) 0..1 arrays with the sum of each 2X2 subblock two extreme terms minus its two median terms lexicographically nondecreasing rowwise and columnwise 1
1456, 27731, 892122, 33823017, 1271453587, 42883865335, 1280647786349, 33729294480195, 795966494233835, 16970688538136080, 331653138682479109, 5983009714922825733, 100686031573770031924, 1588391516232506517066 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A235555

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..32

EXAMPLE

Some solutions for n=2

..0..1..0..1..1..0..1....0..1..1..1..1..1..0....0..1..1..1..0..1..0

..1..0..1..0..0..0..0....1..1..0..1..0..0..1....1..1..0..0..0..0..0

..0..1..0..1..0..1..0....0..1..1..0..0..0..0....1..0..1..1..1..0..1

CROSSREFS

Sequence in context: A145529 A203393 A235771 * A255345 A091715 A224528

Adjacent sequences:  A235551 A235552 A235553 * A235555 A235556 A235557

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 12 2014

STATUS

approved

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Last modified January 19 20:03 EST 2022. Contains 350466 sequences. (Running on oeis4.)