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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A177315 Number of permutations of 9 copies of 1..n with all adjacent differences <= 3 in absolute value. 0
1, 48620, 227873431500, 21452752266265320000, 230729955958244519983206000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

a(n)=(9n)!/362880^n for n<=4

LINKS

Table of n, a(n) for n=1..5.

CROSSREFS

Sequence in context: A177313 A140924 A177314 * A172613 A172554 A244172

Adjacent sequences:  A177312 A177313 A177314 * A177316 A177317 A177318

KEYWORD

nonn

AUTHOR

R. H. Hardin May 06 2010

STATUS

approved

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

Content is available under The OEIS End-User License Agreement .

Last modified October 23 05:26 EDT 2014. Contains 248411 sequences.