|
| |
|
|
A152340
|
|
Number of permutations of floor(i*7/4), i=0..n-1, with all sums of 4 adjacent terms unique.
|
|
0
|
|
|
|
1, 2, 6, 24, 120, 672, 4260, 29280, 242724, 2159176, 20864844, 223065582, 2583122958, 31759066828, 413564101194, 5777537336826
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
1,2
|
|
|
LINKS
|
|
|
|
CROSSREFS
|
|
|
|
KEYWORD
|
nonn
|
|
|
AUTHOR
|
|
|
|
STATUS
|
approved
|
| |
|
|
