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A237206 Number of (n+1)X(3+1) 0..3 arrays with the upper median plus the lower median minus the minimum of every 2X2 subblock equal 1
5130, 59386, 655186, 8448682, 107553623, 1448414238, 19305898426, 264733943408, 3593534378650, 49695732377361, 680698849965170, 9457824351573836, 130255102350059706, 1815360844500949400, 25097384613531422114 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A237211

LINKS

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

EXAMPLE

Some solutions for n=2

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

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

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

CROSSREFS

Sequence in context: A195648 A252919 A255779 * A230575 A251244 A188338

Adjacent sequences:  A237203 A237204 A237205 * A237207 A237208 A237209

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 05 2014

STATUS

approved

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Last modified April 14 20:23 EDT 2021. Contains 342962 sequences. (Running on oeis4.)