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A208712 Number of 5Xn 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
16, 512, 9604, 204020, 4226368, 87985748, 1830045552, 38070302740, 791949216708, 16474443378336, 342707611610988, 7129134738677660, 148302981848252912, 3085055246536395480, 64176496980568384684, 1335023990202619369508 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Row 5 of A208709
LINKS
FORMULA
Empirical: a(n) = 17*a(n-1) +95*a(n-2) -269*a(n-3) -1372*a(n-4) +1500*a(n-5) +6585*a(n-6) -5267*a(n-7) -11175*a(n-8) +10357*a(n-9) +1757*a(n-10) -3001*a(n-11) +237*a(n-12) +207*a(n-13) -30*a(n-14) for n>17
EXAMPLE
Some solutions for n=4
..0..0..1..0....0..0..1..1....0..1..0..0....0..0..1..0....0..0..1..0
..0..0..1..1....0..1..0..0....1..1..1..0....0..1..1..1....1..1..1..1
..1..0..0..0....0..1..1..1....1..0..1..1....1..0..1..1....0..1..0..1
..0..1..0..1....1..0..0..1....0..1..0..1....1..1..0..1....0..1..0..0
..0..0..1..0....0..1..1..0....0..0..1..1....1..1..0..1....0..1..1..0
CROSSREFS
Sequence in context: A302072 A302811 A303472 * A305520 A316957 A298967
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 01 2012
STATUS
approved

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Last modified March 29 08:59 EDT 2024. Contains 371268 sequences. (Running on oeis4.)