|
Search: id:A152169
|
|
|
| A152169 |
|
Number of positions that are exactly n moves from the starting position in the 2 X 2 X 2 Rubik cube puzzle using only one-way quarter moves. |
|
+0
1
|
|
| 1, 3, 9, 27, 78, 216, 583, 1546, 4035, 10320, 25824, 62832, 146322, 321876, 635632, 988788, 958176, 450280, 66420, 1192
(list; graph; listen)
|
|
|
OFFSET
|
0,2
|
|
|
COMMENT
|
A half-turn is considered to be two moves. The one-way quarter move method has historically being disregarded because of the mechanics of the Rubik's cube. It fills still the complete configuration space with the minimum set of generators.
|
|
CROSSREFS
|
Cf. A079761, A079762
Sequence in context: A027027 A140348 A139561 this_sequence A006810 A090401 A113041
Adjacent sequences: A152166 A152167 A152168 this_sequence A152170 A152171 A152172
|
|
KEYWORD
|
fini,full,nonn
|
|
AUTHOR
|
Alejandro Lorca (alejandro.lorca(AT)fdi.ucm.es), Nov 27 2008
|
|
|
Search completed in 0.002 seconds
|
