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A087519
Number of arrangements of 1..n^2 in n X n array with one local minimum and one local maximum.
1
1, 16, 3584, 58566144
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OFFSET
1,2
COMMENTS
Neighbors of a cell are only considered in the X and Y directions.
LINKS
Table of n, a(n) for n=1..4.
EXAMPLE
For n=2, 12 has one local max. whereas 13 has two local maxima
........ 34 and one local min. ....... 42 and two local minima
CROSSREFS
Cf.
A087518
.
Sequence in context:
A281821
A003773
A217021
*
A367535
A222917
A060616
Adjacent sequences:
A087516
A087517
A087518
*
A087520
A087521
A087522
KEYWORD
nonn
,
nice
AUTHOR
R. H. Hardin
, Oct 23 2003
STATUS
approved
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Last modified July 13 09:52 EDT 2024. Contains 374274 sequences. (Running on oeis4.)