login
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
OFFSET
1,2
COMMENTS
Diagonal of A240783
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: A086229 A369322 A130531 * A163138 A201824 A203519
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 12 2014
STATUS
approved