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A235424 Number of (4+1)X(n+1) 0..2 arrays with 2X2 subblock sum of squares lexicographically nondecreasing rowwise and nonincreasing columnwise 1
9504, 533868, 33411901, 1782209164, 93548701107, 4160234178885, 185279527641812, 7009502577083519, 270646584192371106, 8899758764503359520, 302512531294820523210, 8802358542173512135563, 266430632381355740092269 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 4 of A235421

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..14

EXAMPLE

Some solutions for n=1

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

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

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

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

..2..1....2..2....1..2....1..1....2..2....2..2....1..2....2..2....2..1....1..1

CROSSREFS

Sequence in context: A156402 A139676 A291209 * A235420 A236281 A282228

Adjacent sequences:  A235421 A235422 A235423 * A235425 A235426 A235427

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 10 2014

STATUS

approved

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Last modified August 17 17:59 EDT 2022. Contains 356189 sequences. (Running on oeis4.)