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A202745 Number of 4Xn 0..1 arrays with row sums equal and column sums unequal to adjacent columns 0
2, 10, 86, 838, 6870, 62398, 613950, 6018166, 59293518, 601267870, 6215708078, 64727555230, 679456522670, 7200537529326, 76879249259246, 825573117666246, 8913831877350462, 96733061472889806, 1054372579551732366 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Row 4 of A202742
LINKS
EXAMPLE
Some solutions for n=5
..1..1..0..0..1....0..1..0..0..1....1..1..0..1..0....1..0..0..1..0
..0..1..0..1..1....0..1..0..0..1....1..1..0..0..1....1..1..0..0..0
..0..1..1..1..0....0..1..0..0..1....1..1..0..1..0....1..0..0..0..1
..1..1..0..1..0....0..0..0..1..1....1..0..0..1..1....1..0..0..1..0
CROSSREFS
Sequence in context: A156466 A304403 A132397 * A364396 A367372 A371005
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 23 2011
STATUS
approved

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Last modified March 28 14:38 EDT 2024. Contains 371254 sequences. (Running on oeis4.)