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A235835 Number of (3+1)X(n+1) 0..2 arrays with the difference of the upper median and minimum value of each 2X2 subblock in lexicographically nondecreasing order columnwise and nonincreasing rowwise 1
3459, 110923, 3294824, 87473420, 2193348247, 52199681720, 1198855696992, 26756779774314, 584558763163487, 12561692389108238, 266585565128278250, 5604206528796221156, 116980551132195105510, 2429031400047509662778 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 3 of A235833

LINKS

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

EXAMPLE

Some solutions for n=2

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

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

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

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

CROSSREFS

Sequence in context: A251485 A082242 A321866 * A235830 A235586 A252967

Adjacent sequences:  A235832 A235833 A235834 * A235836 A235837 A235838

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 16 2014

STATUS

approved

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Last modified April 20 04:42 EDT 2019. Contains 322294 sequences. (Running on oeis4.)