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A237068 Number of (n+1)X(n+1) 0..3 arrays with the upper median of every 2X2 subblock equal 1
256, 51000, 53940782, 540145357880, 39085052507056252, 22189788076602239718380, 91400599993738526926922639384, 2729637406626551747794693403062699368 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A237076

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..9

EXAMPLE

Some solutions for n=2

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

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

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

CROSSREFS

Sequence in context: A132637 A114850 A017440 * A204302 A264096 A260865

Adjacent sequences:  A237065 A237066 A237067 * A237069 A237070 A237071

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 03 2014

STATUS

approved

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Last modified January 27 10:39 EST 2022. Contains 350607 sequences. (Running on oeis4.)