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A240777 Number of n X n 0..1 arrays with no element equal to fewer vertical neighbors than horizontal neighbors, with new values 0..1 introduced in row major order 0
1, 3, 20, 305, 10150, 746346, 121621207, 43857418181, 34948902833111, 61568080277621258, 239709187163404332821 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A240783

LINKS

Table of n, a(n) for n=1..11.

EXAMPLE

Some solutions for n=4

..0..0..1..0....0..1..0..1....0..1..1..0....0..0..1..0....0..1..0..1

..0..0..1..0....0..1..0..1....0..1..1..0....0..0..1..1....1..0..1..0

..0..0..1..1....0..1..1..0....0..0..1..0....0..1..0..1....0..0..1..1

..0..0..1..1....0..1..1..0....0..0..1..0....0..1..0..1....0..0..1..1

CROSSREFS

Sequence in context: A266812 A086229 A130531 * A163138 A201824 A203519

Adjacent sequences:  A240774 A240775 A240776 * A240778 A240779 A240780

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 12 2014

STATUS

approved

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Last modified May 11 18:21 EDT 2021. Contains 343808 sequences. (Running on oeis4.)