|
| |
|
|
A090164
|
|
Number of configurations of Sam Loyd's sliding block 15-puzzle that require a minimum of n moves to be reached, starting with the empty square at one of the 4 central squares.
|
|
2
| |
|
|
1, 4, 10, 20, 38, 80, 174, 372, 762, 1540, 3072, 6196, 12356, 24516, 48179, 94356
(list; graph; refs; listen; history; internal format)
|
| |
| |
|
|
