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A184075 Number of (n+1)X4 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
150, 239, 1436, 5760, 25954, 104404, 422992, 1588555, 5471235, 17366119, 50883759, 138309491, 350886736, 834954298, 1873682709, 3985258309, 8070671272, 15625241986, 29027866689, 51922380121, 89705278727, 150134603779 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A184081

LINKS

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

EXAMPLE

Some solutions for 3X4

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

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

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

...

...4..5..6.......2..3..4.......1..2..3.......5..6..7.......1..2..3...

...5..6..5.......3..4..3.......2..2..2.......5..6..7.......2..1..2...

CROSSREFS

Sequence in context: A054729 A116185 A008889 * A207044 A292705 A335145

Adjacent sequences:  A184072 A184073 A184074 * A184076 A184077 A184078

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 09 2011

STATUS

approved

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Last modified October 27 13:38 EDT 2021. Contains 348276 sequences. (Running on oeis4.)