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A238933 Number of (4+1)X(n+1) 0..3 arrays with no element greater than all horizontal neighbors or equal to all vertical neighbors 1
540, 176224, 22636472, 2531484558, 330899764092, 45110351036260, 6073850637262806, 810496773508386224, 108127360707006003716, 14442654537530496784878, 1929809100292543309059168 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 4 of A238929

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..103

EXAMPLE

Some solutions for n=2

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

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

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

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

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

CROSSREFS

Sequence in context: A146196 A054562 A056934 * A003746 A203408 A259165

Adjacent sequences:  A238930 A238931 A238932 * A238934 A238935 A238936

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 07 2014

STATUS

approved

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Last modified March 8 20:52 EST 2021. Contains 341953 sequences. (Running on oeis4.)