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A236889 Number of (n+1)X(4+1) 0..2 arrays with the maximum plus the upper median minus the lower median minus the minimum of every 2X2 subblock equal 1
2605, 19005, 134361, 1107653, 9168057, 83876241, 790250057, 8009517233, 83737435605, 917784582345, 10269819192521, 117934655230729, 1369232459021877, 16101100336780961, 190317918014799501 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A236893

LINKS

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

R. H. Hardin, Empirical recurrence of order 59

FORMULA

Empirical recurrence of order 59 (see link above)

EXAMPLE

Some solutions for n=3

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

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

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

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

CROSSREFS

Sequence in context: A109487 A015309 A212083 * A254695 A054258 A236666

Adjacent sequences:  A236886 A236887 A236888 * A236890 A236891 A236892

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 01 2014

STATUS

approved

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Last modified April 1 10:33 EDT 2020. Contains 333159 sequences. (Running on oeis4.)