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A316578 Number of nX3 0..1 arrays with every element unequal to 1, 2, 3, 4, 7 or 8 king-move adjacent elements, with upper left element zero. 1
1, 23, 63, 338, 1312, 5936, 25271, 110555, 478290, 2079671, 9022567, 39184505, 170094043, 738520371, 3206190960, 13919960703, 60433331958, 262373351014, 1139097162102, 4945415596141, 21470609436976, 93215075154612 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Column 3 of A316583.
LINKS
FORMULA
Empirical: a(n) = a(n-1) +13*a(n-2) +12*a(n-3) -18*a(n-4) -27*a(n-5) +4*a(n-6) +19*a(n-7) +31*a(n-8) -3*a(n-10) -3*a(n-11) -14*a(n-12) -6*a(n-14) +4*a(n-15) for n>16
EXAMPLE
Some solutions for n=5
..0..0..0. .0..1..0. .0..1..0. .0..1..1. .0..0..1. .0..1..1. .0..1..1
..0..1..0. .0..1..1. .1..0..1. .0..1..0. .0..1..1. .0..0..0. .1..0..0
..1..0..0. .1..1..1. .0..1..0. .1..0..1. .1..1..0. .0..1..0. .1..0..0
..1..0..0. .1..0..1. .1..0..1. .0..0..0. .1..0..1. .1..0..0. .0..0..1
..0..0..1. .0..1..1. .1..0..0. .0..1..1. .0..0..0. .0..1..1. .1..0..1
CROSSREFS
Cf. A316583.
Sequence in context: A107692 A089823 A304896 * A323220 A001346 A051875
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jul 07 2018
STATUS
approved

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Last modified March 28 17:25 EDT 2024. Contains 371254 sequences. (Running on oeis4.)