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A283546 Number of 5Xn 0..1 arrays with no 1 equal to more than one of its horizontal, diagonal and antidiagonal neighbors. 1
32, 291, 2615, 29558, 282773, 2905717, 29377334, 295789859, 2998091753, 30266794266, 306005234215, 3093187359365, 31261007663534, 315993726715575, 3193844095568199, 32282050634653328, 326293583523224661 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Row 5 of A283543.
LINKS
FORMULA
Empirical: a(n) = 4*a(n-1) +42*a(n-2) +198*a(n-3) -64*a(n-4) +925*a(n-5) -1855*a(n-6) +7735*a(n-7) -27083*a(n-8) +45326*a(n-9) -73559*a(n-10) +51145*a(n-11) +19879*a(n-12) +10890*a(n-13) +32935*a(n-14) -24368*a(n-15) +328*a(n-16) +7803*a(n-17) -32113*a(n-18) -558*a(n-19) +29*a(n-20) +30*a(n-21)
EXAMPLE
Some solutions for n=4
..0..0..1..0. .0..0..0..0. .1..1..0..1. .1..1..0..1. .1..0..1..0
..1..0..0..0. .0..1..0..0. .0..0..0..1. .0..0..0..0. .0..0..0..0
..1..0..0..1. .0..0..0..1. .1..0..0..0. .0..1..0..0. .1..0..0..0
..0..0..0..0. .1..0..0..0. .0..0..0..0. .0..1..0..0. .1..0..1..0
..0..0..1..0. .0..1..0..0. .1..0..0..1. .0..0..1..0. .1..0..1..0
CROSSREFS
Cf. A283543.
Sequence in context: A267324 A197523 A337418 * A297685 A303725 A305228
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 10 2017
STATUS
approved

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Last modified April 13 10:11 EDT 2024. Contains 371640 sequences. (Running on oeis4.)