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

17, 891, 25533, 793881, 24879489, 775176415, 24176619049, 754066017977, 23517838102321, 733484062428443, 22876204302519509, 713472099034206097, 22252052902297965073, 694005913498881446047, 21644933495864588983569

Offset

1,1

Comments

Column 5 of A218663

Links

R. H. Hardin, Table of n, a(n) for n = 1..145

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

Adjacent sequences: A218657 A218658 A218659 * A218661 A218662 A218663

Keyword

nonn

Author

R. H. Hardin Nov 04 2012

Status

approved