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A218819 Unmatched value maps: number of nX4 binary arrays indicating the locations of corresponding elements not equal to any king-move neighbor in a random 0..2 nX4 array 1
7, 108, 1028, 8961, 80692, 720305, 6449353, 57696032, 516297052, 4619740712, 41337798409, 369890905178, 3309794955133, 29616122507437, 265005821287188, 2371278692119396, 21218261329031222, 189861534294482599 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A218823

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..41

FORMULA

Empirical: a(n) = 13*a(n-1) -30*a(n-2) -97*a(n-3) +386*a(n-4) -89*a(n-5) -794*a(n-6) +557*a(n-7) +352*a(n-8) -279*a(n-9) -56*a(n-10) +40*a(n-11) +7*a(n-12) -3*a(n-13) for n>14

EXAMPLE

Some solutions for n=3

..0..0..1..0....1..1..0..1....1..0..0..0....0..1..0..0....1..1..1..0

..0..0..0..1....0..0..0..1....0..0..1..1....0..1..0..1....0..0..0..0

..1..0..0..1....1..1..0..1....0..0..0..0....0..0..0..0....0..1..0..0

CROSSREFS

Sequence in context: A197447 A202780 A297804 * A033516 A130629 A137648

Adjacent sequences:  A218816 A218817 A218818 * A218820 A218821 A218822

KEYWORD

nonn

AUTHOR

R. H. Hardin Nov 06 2012

STATUS

approved

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Last modified October 30 05:34 EDT 2020. Contains 338077 sequences. (Running on oeis4.)