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A237893 Number of (n+1)X(3+1) 0..3 arrays with the maximum minus the upper median of every 2X2 subblock equal 1
13600, 563534, 21793104, 925593210, 39591208852, 1751486936860, 78473090681640, 3575476081277982, 164300744976785348, 7616876069821561510, 354844692646882929540, 16606976461988916982400, 779297991213997884768536 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A237898

LINKS

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

EXAMPLE

Some solutions for n=1

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

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

CROSSREFS

Sequence in context: A249526 A108418 A232447 * A206091 A218456 A224971

Adjacent sequences:  A237890 A237891 A237892 * A237894 A237895 A237896

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 15 2014

STATUS

approved

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Last modified June 15 04:47 EDT 2021. Contains 345043 sequences. (Running on oeis4.)