Number of configurations of a variant of the 3-dimensional 3 X 3 X 3 sliding cube puzzle that require a minimum of n moves to be reached, starting with the empty space at the center of one of the 6 faces of the combination cube.
A091521
Number of configurations of a variant of the 3-dimensional 3 X 3 X 3 sliding cube puzzle that require a minimum of n moves to be reached, starting with the empty space at the center of one of the 6 faces of the combination cube.
Terms
- a(0) =1a(1) =4a(2) =12a(3) =28a(4) =84a(5) =212a(6) =632a(7) =1544a(8) =4584a(9) =11220a(10) =33060a(11) =80152a(12) =234648a(13) =565192a(14) =1643552a(15) =3926832a(16) =11337422a(17) =26852656a(18) =76981660
External references
- oeis: A091521