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A222611
Number of n X 3 0..3 arrays with no more than floor(n X 3/2) elements unequal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..3 order.
1
1, 3, 5, 65, 181, 3545, 11421, 243955, 829319, 17592855, 61952605, 1284213397, 4662579053, 94370045311, 351914237859, 6970771357553, 26611889407629, 517258600443449, 2015559262618275, 38540189430369807, 152866542948213595
OFFSET
1,2
COMMENTS
Column 3 of A222616.
LINKS
EXAMPLE
All solutions for n=3
..0..0..0....0..1..1....0..0..0....0..0..0....0..0..1
..0..0..0....1..1..1....0..0..0....0..0..0....0..0..0
..0..0..1....1..1..1....1..0..0....0..0..0....0..0..0
CROSSREFS
Cf. A222616.
Sequence in context: A319584 A318546 A076513 * A261071 A247862 A348205
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 26 2013
STATUS
approved