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A184074 Number of (n+1)X3 0..2 arrays with rows and columns in nondecreasing order and with no 2X2 subblock sum differing from a horizontal or vertical neighbor subblock sum by more than one 1
58, 74, 239, 578, 1599, 4233, 11128, 28248, 67622, 152873, 327044, 665356, 1293389, 2411872, 4330976, 7515107, 12640705, 20668977, 32935784, 51260994, 78079741, 116598158, 170976280, 246540941, 350031617, 489882295, 676542576, 922841348 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A184081

LINKS

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

EXAMPLE

Some solutions for 4X3

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

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

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

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

...

...5..5.......5..6.......6..7.......5..6.......2..3.......2..3.......3..4...

...6..5.......5..5.......6..6.......6..5.......3..2.......2..3.......4..3...

CROSSREFS

Sequence in context: A226036 A127024 A010338 * A281824 A127334 A275702

Adjacent sequences:  A184071 A184072 A184073 * A184075 A184076 A184077

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 09 2011

STATUS

approved

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Last modified October 17 16:51 EDT 2019. Contains 328120 sequences. (Running on oeis4.)