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A298961 Number of nX6 0..1 arrays with every element equal to 3, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero. 1
0, 5, 5, 34, 91, 360, 1144, 4062, 13794, 47972, 164529, 567553, 1953217, 6732815, 23189914, 79894441, 275211747, 948122291, 3266225384, 11252104514, 38762888085, 133536840437, 460029356546, 1584785398981, 5459526766694 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Column 6 of A298963.
LINKS
FORMULA
Empirical: a(n) = 4*a(n-1) -a(n-2) -3*a(n-3) +14*a(n-4) -44*a(n-5) -22*a(n-6) -27*a(n-7) +33*a(n-8) +210*a(n-9) +164*a(n-10) +294*a(n-11) -198*a(n-12) -391*a(n-13) -686*a(n-14) -638*a(n-15) +36*a(n-16) +450*a(n-17) +656*a(n-18) +232*a(n-19) +286*a(n-20) -8*a(n-21) +96*a(n-22) -142*a(n-23) +20*a(n-24) -196*a(n-25) -32*a(n-26) +16*a(n-27) +24*a(n-28) -32*a(n-29) +16*a(n-30)
EXAMPLE
Some solutions for n=5
..0..0..0..1..1..1. .0..0..0..1..1..1. .0..0..1..1..0..0. .0..0..0..0..0..0
..0..0..0..1..1..1. .0..0..0..1..1..1. .0..0..1..1..0..0. .0..0..0..0..0..0
..1..1..1..1..1..1. .0..0..0..0..0..0. .0..0..1..1..1..1. .0..0..0..0..0..0
..1..1..1..1..1..1. .1..1..1..0..0..0. .0..0..1..1..1..1. .0..0..0..0..1..1
..1..1..1..1..1..1. .1..1..1..0..0..0. .0..0..1..1..1..1. .0..0..0..0..1..1
CROSSREFS
Cf. A298963.
Sequence in context: A270278 A270725 A317812 * A298721 A299555 A160608
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 30 2018
STATUS
approved

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Last modified July 23 18:56 EDT 2024. Contains 374553 sequences. (Running on oeis4.)