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!)
A147936 Number of permutations of floor(i*6/5), i=0..n-1, with all sums of 2 through 4 adjacent terms respectively unique. 0
1, 2, 6, 16, 54, 260, 1236, 6360, 31636, 166080, 1095490, 6861468, 47125320, 327177196, 2371069132, 20747895710 (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: A147896 A147888 A147945 * A147927 A147919 A320805

Adjacent sequences:  A147933 A147934 A147935 * A147937 A147938 A147939

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 July 4 20:49 EDT 2022. Contains 355086 sequences. (Running on oeis4.)