|
| |
|
|
A147727
|
|
Number of permutations of 1..n with all sums of 2 through 5 adjacent terms respectively unique.
|
|
0
|
|
|
|
1, 2, 6, 16, 54, 232, 936, 3880, 17302, 81584, 409012, 2169742, 11998726, 69653068, 426511054, 2718410098, 18114464012
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
1,2
|
|
|
LINKS
|
|
|
|
CROSSREFS
|
|
|
|
KEYWORD
|
nonn
|
|
|
AUTHOR
|
|
|
|
STATUS
|
approved
|
| |
|
|
