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A236941 Number of (n+1)X(n+1) 0..3 arrays with the maximum of every 2X2 subblock equal 1
256, 112888, 534626674, 33887916009662, 21767431884019104260, 160577378511458058360114308, 12541685260260879735250182260062400, 10826931903978835718436872493300000532953496 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A236949

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..15

EXAMPLE

Some solutions for n=2

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

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

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

CROSSREFS

Sequence in context: A207295 A205927 A223354 * A222141 A333585 A185924

Adjacent sequences:  A236938 A236939 A236940 * A236942 A236943 A236944

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 01 2014

STATUS

approved

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Last modified July 31 15:25 EDT 2021. Contains 346374 sequences. (Running on oeis4.)