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A222542
Number of 2Xn 0..1 arrays with no more than floor(2Xn/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..1 order
1
2, 1, 5, 8, 19, 54, 104, 294, 665, 1653, 3999, 9931, 23922, 60440, 145456, 367778, 895971, 2252812, 5539668, 13906403, 34364667, 86296674, 214005020, 537481517, 1337290024, 3358607279, 8379217095, 21048882131, 52624535726, 132246784124
OFFSET
1,1
COMMENTS
Row 2 of A222541
LINKS
EXAMPLE
All solutions for n=3
..0..0..0....0..1..1....0..0..0....0..0..0....0..0..1
..1..0..0....1..1..1....0..0..1....0..0..0....0..0..0
CROSSREFS
Sequence in context: A201743 A167816 A316292 * A318052 A026078 A349635
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 24 2013
STATUS
approved