login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A087930 Number of ways of arranging the numbers 1 ... 9n into a 9 X n array so there is exactly one local maximum. 0
256, 72545402880, 1811764909105311267840, 299167849199075018703047460201600 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..4.

CROSSREFS

A row of the array in A087783. Cf. A007846.

Sequence in context: A017420 A017552 A056668 * A245490 A185981 A255321

Adjacent sequences:  A087927 A087928 A087929 * A087931 A087932 A087933

KEYWORD

nonn

AUTHOR

R. H. Hardin, Oct 27 2003

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified July 18 01:05 EDT 2019. Contains 325109 sequences. (Running on oeis4.)