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A208708 Number of nX7 0..1 arrays with new values 0..1 introduced in row major order and no element equal to more than two of its immediate leftward or upward or right-upward antidiagonal neighbors 1
64, 4516, 334948, 24754628, 1830045552, 135288700496, 10001404535216, 739367693888784, 54658781788350480, 4040726220144359312, 298716287704524626960, 22083015695332916533648, 1632517550173528777448208 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 7 of A208709
LINKS
FORMULA
Empirical: a(n) = 83*a(n-1) -710*a(n-2) +3004*a(n-3) -7952*a(n-4) +16752*a(n-5) -27360*a(n-6) +33984*a(n-7) -26368*a(n-8) for n>10
EXAMPLE
Some solutions for n=4
..0..0..0..1..0..1..0....0..0..1..0..1..1..1....0..0..0..0..0..1..1
..0..1..1..0..1..1..0....0..0..1..1..0..1..1....0..1..0..1..1..0..1
..1..0..0..0..1..0..0....0..1..0..0..1..0..0....1..1..1..0..0..1..0
..1..1..0..1..0..1..0....0..0..1..0..0..1..1....0..1..0..1..1..1..1
CROSSREFS
Sequence in context: A264345 A099369 A249393 * A189957 A146496 A058874
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 01 2012
STATUS
approved

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Last modified April 13 16:05 EDT 2024. Contains 371644 sequences. (Running on oeis4.)