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A218660
Hilltop maps: number of nX5 binary arrays indicating the locations of corresponding elements not exceeded by any king-move neighbor in a random 0..1 nX5 array
2
17, 891, 25533, 793881, 24879489, 775176415, 24176619049, 754066017977, 23517838102321, 733484062428443, 22876204302519509, 713472099034206097, 22252052902297965073, 694005913498881446047, 21644933495864588983569
OFFSET
1,1
COMMENTS
Column 5 of A218663
LINKS
FORMULA
Empirical: a(n) = 22*a(n-1) +221*a(n-2) +1942*a(n-3) +3098*a(n-4) +4510*a(n-5) -26974*a(n-6) -8338*a(n-7) -42296*a(n-8) +99746*a(n-9) -4596*a(n-10) +54786*a(n-11) -78954*a(n-12) -8950*a(n-13) -5890*a(n-14) +10650*a(n-15) +425*a(n-16) -425*a(n-18)
EXAMPLE
Some solutions for n=3
..0..1..0..0..0....1..1..0..1..1....1..1..1..1..1....1..1..0..1..0
..1..1..1..0..1....1..1..0..1..1....1..1..1..1..0....1..0..0..0..1
..0..0..1..1..0....1..0..1..1..0....0..0..0..0..1....1..1..0..0..0
CROSSREFS
Sequence in context: A281428 A221324 A124235 * A086265 A156138 A229261
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 04 2012
STATUS
approved