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A235825 Number of (2+1)X(n+1) 0..3 arrays with the difference of the upper median and minimum value of each 2X2 subblock in lexicographically nondecreasing order columnwise and nonincreasing rowwise 1
2896, 91067, 2623192, 66311937, 1570352593, 34846608905, 739650496878, 15108091788156, 299564452754368, 5794097242570815, 109830528586180045, 2047182453929500542, 37629995994579050559, 683660451068283310914 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 2 of A235824

LINKS

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

EXAMPLE

Some solutions for n=2

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

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

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

CROSSREFS

Sequence in context: A234886 A236655 A235822 * A235580 A285756 A248109

Adjacent sequences:  A235822 A235823 A235824 * A235826 A235827 A235828

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 16 2014

STATUS

approved

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Last modified August 17 03:53 EDT 2022. Contains 356184 sequences. (Running on oeis4.)