|
| |
|
|
A152334
|
|
Number of permutations of floor(i*4/3), i=0..n-1, with all sums of 4 adjacent terms unique.
|
|
0
|
|
|
|
1, 2, 6, 24, 120, 640, 3936, 28800, 221000, 1890260, 17757658, 178522700, 1984189170, 23487665246, 293589788564, 3987487236438
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
1,2
|
|
|
LINKS
|
|
|
|
CROSSREFS
|
|
|
|
KEYWORD
|
nonn
|
|
|
AUTHOR
|
|
|
|
STATUS
|
approved
|
| |
|
|
