login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A177314 Number of permutations of 9 copies of 1..n with all adjacent differences <= 2 in absolute value. 0
1, 1, 48620, 227873431500, 66341857216154520, 10150867545062935511900 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

a(n) = (9n)!/362880^n for n<=3.

LINKS

Table of n, a(n) for n=0..5.

CROSSREFS

Cf. A172613.

Sequence in context: A245862 A177313 A140924 * A177315 A172613 A172554

Adjacent sequences:  A177311 A177312 A177313 * A177315 A177316 A177317

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 | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified July 29 17:41 EDT 2021. Contains 346346 sequences. (Running on oeis4.)