The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
login
The OEIS is supported by the many generous donors 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, 1, 48620, 227873431500, 21452752266265320000, 230729955958244519983206000 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,3
COMMENTS
a(n) = (9n)!/362880^n for n<=4.
LINKS
Table of n, a(n) for n=0..5.
CROSSREFS
Cf. A172613.
Sequence in context: A140924 A351488 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 | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified June 5 04:27 EDT 2024. Contains 373102 sequences. (Running on oeis4.)