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

 

Logo

Invitation: celebrating 50 years of OEIS, 250000 sequences, and Sloane's 75th, there will be a conference at DIMACS, Rutgers, Oct 9-10 2014.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A177281 Number of permutations of 1..n with all adjacent differences <= 9 in absolute value. 0
1, 2, 6, 24, 120, 720, 5040, 40320, 362880, 3628800, 32659200, 267805440, 2033498880, 14563332000, 100185340320, 672903217200, 4472291398032, 29721557854116, 199059839989844 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

a(n)=n! for n<=10

LINKS

Table of n, a(n) for n=1..19.

CROSSREFS

Sequence in context: A072133 A230232 A232985 * A173850 A154658 A179369

Adjacent sequences:  A177278 A177279 A177280 * A177282 A177283 A177284

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 July 24 08:51 EDT 2014. Contains 244878 sequences.