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A236975 Number of (n+1)X(3+1) 0..3 arrays with the maximum plus the upper median minus the minimum of every 2X2 subblock equal 1
6024, 76212, 898820, 11850502, 151656752, 2025835812, 26630922346, 357532653542, 4755836009162, 64003985025026, 856771671964444, 11547914807203730, 155175900645701946, 2093923309757087606 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A236979

LINKS

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

EXAMPLE

Some solutions for n=2

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

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

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

CROSSREFS

Sequence in context: A143043 A031605 A239176 * A206113 A237864 A031821

Adjacent sequences:  A236972 A236973 A236974 * A236976 A236977 A236978

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 02 2014

STATUS

approved

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Last modified February 26 00:08 EST 2020. Contains 332270 sequences. (Running on oeis4.)