|
|
A152386
|
|
Number of permutations of floor(i*9/7), i=0..n-1, with all sums of 6 adjacent terms unique.
|
|
0
|
|
|
1, 2, 6, 24, 120, 720, 5040, 37440, 303912, 2690304, 25901984, 269965600, 3126293480, 38002845800, 508011792988, 7128791775500
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,2
|
|
LINKS
|
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|