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A235553 Number of (n+1)X(5+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
660, 9320, 184281, 3824372, 74362722, 1271453587, 19182239308, 256273383832, 3086943812776, 33826465004088, 341964622301035, 3210882675698422, 28280047570300320, 234710501561552376, 1848700471390541492 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A235555

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..144

EXAMPLE

Some solutions for n=3

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

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

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

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

CROSSREFS

Sequence in context: A235770 A204538 A204534 * A342994 A252457 A252450

Adjacent sequences:  A235550 A235551 A235552 * A235554 A235555 A235556

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 12 2014

STATUS

approved

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Last modified January 17 22:33 EST 2022. Contains 350410 sequences. (Running on oeis4.)