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A283541 Number of nX6 0..1 arrays with no 1 equal to more than one of its horizontal, diagonal and antidiagonal neighbors. 1
44, 537, 10069, 167920, 2905717, 49760703, 854841910, 14672363665, 251901309671, 4324419947902, 74239477396709, 1274497943112719, 21879841688275026, 375620233563570591, 6448427921064594633, 110702824503136846908 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 6 of A283543.
LINKS
FORMULA
Empirical: a(n) = 15*a(n-1) +58*a(n-2) -419*a(n-3) +549*a(n-4) +9774*a(n-5) -8488*a(n-6) -118308*a(n-7) -78845*a(n-8) +478855*a(n-9) +460388*a(n-10) +780487*a(n-11) -1463834*a(n-12) -3318118*a(n-13) +1351800*a(n-14) +6126749*a(n-15) -1699911*a(n-16) -5411438*a(n-17) -2127087*a(n-18) +2727723*a(n-19) +7791596*a(n-20) -8102395*a(n-21) -4823004*a(n-22) +8249065*a(n-23) +1316588*a(n-24) -3377260*a(n-25) +134761*a(n-26) +308508*a(n-27)
EXAMPLE
Some solutions for n=4
..1..0..1..0..1..0. .1..0..1..0..1..0. .0..1..0..0..0..0. .0..0..0..0..0..0
..1..0..0..0..1..0. .1..0..1..0..0..0. .1..0..0..0..1..0. .0..1..0..0..1..0
..0..0..0..1..0..0. .0..0..1..0..1..0. .0..0..0..0..1..0. .0..0..0..1..0..0
..0..1..0..1..0..1. .1..0..1..0..1..0. .0..1..1..0..0..0. .0..1..0..1..0..1
CROSSREFS
Cf. A283543.
Sequence in context: A272186 A222514 A282645 * A354608 A339852 A202075
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 10 2017
STATUS
approved

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Last modified May 24 11:59 EDT 2024. Contains 372773 sequences. (Running on oeis4.)