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A183415 Number of nX2 0..2 arrays with each sum of a(1..i,1..j) no greater than i*j 1
5, 34, 249, 1920, 15232, 123323, 1012996, 8413325, 70482133, 594587235, 5044756083, 43007895169, 368151018388, 3162466934006, 27248906449457, 235414313839524, 2038652180610193, 17691623325368274, 153819626587560407 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A183419

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..200

EXAMPLE

Some solutions for 4X2

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

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

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

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

CROSSREFS

Sequence in context: A033889 A120469 A180909 * A066559 A073279 A080503

Adjacent sequences:  A183412 A183413 A183414 * A183416 A183417 A183418

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 04 2011

STATUS

approved

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Last modified March 28 07:59 EDT 2020. Contains 333079 sequences. (Running on oeis4.)