The On-Line Encyclopedia of Integer Sequences (OEIS)

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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
(history; published version)

#5 by Russ Cox at Mon Aug 11 22:46:09 EDT 2014

LINKS

R. H. Hardin, <a href="/A236519/a236519.txt">Empirical recurrence of order 82</a>

Discussion

Mon Aug 11

22:46

OEIS Server: https://oeis.org/edit/global/2322

#4 by R. H. Hardin at Mon Jan 27 17:44:49 EST 2014

STATUS

editing

approved

#3 by R. H. Hardin at Mon Jan 27 17:44:46 EST 2014

LINKS

R. H. Hardin, <a href="/A236519/a236519.txt">Empirical recurrence of order 82</a>

R. H. Hardin, <a href="/A236519/b236519.txt">Table of n, a(n) for n = 1..210</a>

#2 by R. H. Hardin at Mon Jan 27 17:44:08 EST 2014

NAME

allocated for R. H. Hardin

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

DATA

476, 5670, 63208, 655460, 6591144, 63997604, 610630403, 5723134951, 53126385011, 488732268982, 4473422061090, 40764881225427, 370542416886458, 3361057454037610, 30450286475294399, 275604525437140015

OFFSET

1,1

COMMENTS

Column 4 of A236523

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

KEYWORD

allocated

nonn

AUTHOR

R. H. Hardin, Jan 27 2014

STATUS

approved

editing

#1 by R. H. Hardin at Mon Jan 27 17:39:52 EST 2014

NAME

allocated for R. H. Hardin

KEYWORD

allocated

STATUS

approved