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A218233 T(n,k)=Hilltop maps: number of nXk binary arrays indicating the locations of corresponding elements not exceeded by any horizontal, vertical or antidiagonal neighbor in a random 0..2 nXk array 8
1, 3, 3, 7, 15, 7, 13, 61, 61, 13, 25, 241, 497, 241, 25, 49, 961, 3969, 3969, 961, 49, 97, 3839, 31739, 63309, 31739, 3839, 97, 191, 15327, 253825, 1012165, 1012165, 253825, 15327, 191, 375, 61185, 2029849, 16187585, 32362849, 16187585, 2029849, 61185 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Table starts

....1........3...........7..............13..................25

....3.......15..........61.............241.................961

....7.......61.........497............3969...............31739

...13......241........3969...........63309.............1012165

...25......961.......31739.........1012165............32362849

...49.....3839......253825........16187585..........1035156707

...97....15327.....2029849.......258892017.........33110750073

..191....61185....16232833......4140512637.......1059084383987

..375...244257...129815047.....66219989569......33875964329259

..737...975105..1038139593...1059068692053....1083559590888045

.1449..3892739..8302071585..16937884056129...34658833277009039

.2849.15540287.66392220265.270890753853217.1108600518368443675

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..161

EXAMPLE

Some solutions for n=3 k=4

..1..0..1..0....0..0..1..1....1..1..0..1....1..0..1..0....0..0..0..0

..1..0..0..1....1..1..1..0....1..1..0..1....0..0..1..0....1..0..0..1

..1..1..0..0....0..1..0..1....1..0..1..0....1..1..1..1....0..1..0..0

CROSSREFS

Column 1 is A218199

Sequence in context: A119470 A060368 A218206 * A218319 A218196 A218372

Adjacent sequences:  A218230 A218231 A218232 * A218234 A218235 A218236

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Oct 24 2012

STATUS

approved

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Last modified March 4 04:39 EST 2021. Contains 341779 sequences. (Running on oeis4.)