login
A222283
Number of nX1 0..1 arrays with exactly floor(nX1/2) elements unequal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..1 order
5
1, 0, 0, 3, 4, 4, 5, 20, 27, 48, 63, 175, 236, 512, 684, 1719, 2320, 5400, 7271, 17776, 24036, 57420, 77636, 188656, 255591, 617176, 836595, 2033175, 2759184, 6697744, 9094949, 22139780, 30086955, 73262232, 99615081, 242931321, 330503120
OFFSET
1,4
COMMENTS
Column 1 of A222290
LINKS
EXAMPLE
All solutions for n=4
..0....0....0
..1....0....0
..1....0....1
..1....1....1
CROSSREFS
Sequence in context: A028263 A059179 A279678 * A336094 A182487 A309530
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 14 2013
STATUS
approved