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!)
A147943 Number of permutations of floor(i*4/3), i=0..n-1, with all sums of 2 through 5 adjacent terms respectively unique. 0
1, 2, 6, 24, 74, 312, 1620, 7876, 41114, 262142, 1532832, 9946476, 74352024, 512825612, 3896130434, 33601759994 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..16.

CROSSREFS

Sequence in context: A178847 A173844 A107761 * A147934 A147925 A147917

Adjacent sequences:  A147940 A147941 A147942 * A147944 A147945 A147946

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 17 2008

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 May 28 08:23 EDT 2022. Contains 354112 sequences. (Running on oeis4.)