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A236519 Number of (n+1)X(4+1) 0..1 arrays with the difference of the upper median and minimum value of each 2X2 subblock in lexicographically nondecreasing order columnwise and nonincreasing rowwise 1
476, 5670, 63208, 655460, 6591144, 63997604, 610630403, 5723134951, 53126385011, 488732268982, 4473422061090, 40764881225427, 370542416886458, 3361057454037610, 30450286475294399, 275604525437140015 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A236523

LINKS

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

R. H. Hardin, Empirical recurrence of order 82

FORMULA

Empirical recurrence of order 82 (see link above)

EXAMPLE

Some solutions for n=3

..1..1..0..1..1....1..1..1..1..1....0..0..1..1..0....1..1..0..1..1

..0..1..1..0..1....0..1..0..0..1....1..0..0..1..0....0..0..1..1..0

..1..0..1..0..1....1..1..1..1..1....0..0..0..0..0....1..1..0..1..0

..0..0..0..0..0....1..1..1..0..0....1..0..1..0..0....1..0..1..1..1

CROSSREFS

Sequence in context: A171077 A234077 A205287 * A205895 A235656 A264290

Adjacent sequences:  A236516 A236517 A236518 * A236520 A236521 A236522

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 27 2014

STATUS

approved

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Last modified December 2 23:09 EST 2020. Contains 338898 sequences. (Running on oeis4.)