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A237674 Number of (n+1)X(3+1) 0..3 arrays with the maximum plus the upper median plus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one 1
9647, 132572, 1915153, 30618976, 482106388, 7419017752, 114668103482, 1793614472940, 27996960383960, 434388537507724, 6749474606955534, 105134236900373020, 1637558709137710098, 25456188164250835364 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A237677

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=2

..0..1..0..2....2..2..3..0....1..2..2..1....2..0..2..3....1..1..2..1

..2..0..3..1....3..1..3..1....0..3..1..2....2..0..3..0....0..2..0..0

..1..2..1..0....2..0..3..1....1..3..3..2....0..3..2..0....0..0..1..3

CROSSREFS

Sequence in context: A237231 A031627 A252128 * A183851 A238036 A204351

Adjacent sequences:  A237671 A237672 A237673 * A237675 A237676 A237677

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 11 2014

STATUS

approved

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Last modified October 5 10:20 EDT 2022. Contains 357255 sequences. (Running on oeis4.)