|
Search: id:A151609
|
|
|
| A151609 |
|
Number of permutations of 6 indistinguishable copies of 1..n arranged in a circle with exactly 4 adjacent element pairs in decreasing order. |
|
+0 1
|
|
| 0, 300, 753975, 188612400, 26312329155, 2954839555836
(list; graph; listen)
|
|
|
|
|
Search completed in 0.002 seconds
|