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A298996 Number of nX3 0..1 arrays with every element equal to 0, 1, 2, 3, 4 or 6 king-move adjacent elements, with upper left element zero. 2
4, 31, 179, 1073, 6479, 39015, 235033, 1416220, 8533123, 51414948, 309794527, 1866627347, 11247127125, 67768156738, 408328539256, 2460332478992, 14824425340207, 89322718995185, 538202860973128, 3242873961665678 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 3 of A299001.
LINKS
FORMULA
Empirical: a(n) = 5*a(n-1) +6*a(n-2) +7*a(n-3) -26*a(n-4) -53*a(n-5) -27*a(n-6) -39*a(n-7) +17*a(n-8) -5*a(n-9) +12*a(n-10) for n>11
EXAMPLE
Some solutions for n=6
..0..0..1. .0..1..1. .0..0..0. .0..0..1. .0..0..1. .0..1..1. .0..1..1
..1..1..0. .1..0..1. .1..1..0. .1..1..1. .0..1..0. .0..0..0. .0..1..0
..0..1..0. .0..0..0. .0..0..1. .0..0..0. .1..0..0. .1..0..1. .0..0..0
..0..1..0. .1..1..1. .0..1..0. .0..1..0. .0..1..1. .0..1..1. .0..0..1
..0..1..0. .0..0..0. .1..1..1. .1..1..1. .0..1..0. .0..0..0. .0..1..0
..1..1..0. .0..1..1. .0..1..0. .0..1..0. .0..0..1. .1..1..1. .1..1..0
CROSSREFS
Cf. A299001.
Sequence in context: A299076 A270670 A270669 * A299663 A005216 A124033
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 31 2018
STATUS
approved

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Last modified February 21 22:50 EST 2024. Contains 370239 sequences. (Running on oeis4.)