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A218426 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..1 nXk array 9
1, 3, 3, 5, 13, 5, 9, 49, 49, 9, 17, 191, 357, 191, 17, 31, 737, 2725, 2725, 737, 31, 57, 2849, 20793, 41515, 20793, 2849, 57, 105, 11011, 158429, 629659, 629659, 158429, 11011, 105, 193, 42557, 1207525, 9539915, 19003811, 9539915, 1207525, 42557, 193 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Table starts
....1.......3...........5...............9.................17
....3......13..........49.............191................737
....5......49.........357............2725..............20793
....9.....191........2725...........41515.............629659
...17.....737.......20793..........629659...........19003811
...31....2849......158429.........9539915..........572765605
...57...11011.....1207525.......144597047........17270172871
..105...42557.....9203377......2191517757.......520703946625
..193..164481....70144889.....33214850067.....15699497444771
..355..635711...534620525....503408006597....473348740584743
..653.2456993..4074695269...7629705089721..14271727157207365
.1201.9496161.31055936969.115636627121941.430300515162577777
LINKS
EXAMPLE
Some solutions for n=3 k=4
..1..0..1..1....0..1..0..1....1..1..1..0....1..1..0..1....1..0..0..1
..0..1..0..1....0..0..0..0....0..0..1..0....0..0..1..0....0..1..0..0
..1..1..1..1....1..1..0..1....1..1..0..1....1..1..0..1....0..1..1..1
CROSSREFS
Column 1 is A000213(n+1)
Sequence in context: A227616 A079439 A231895 * A321662 A320176 A298478
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Oct 28 2012
STATUS
approved

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Last modified March 28 14:38 EDT 2024. Contains 371254 sequences. (Running on oeis4.)