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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

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.

Table of values

n a(n)
0 1
1 4
2 12
3 28
4 84
5 212
6 632
7 1544
8 4584
9 11220
10 33060
11 80152
12 234648
13 565192
14 1643552
15 3926832
16 11337422
17 26852656
18 76981660

List of values

[1, 4, 12, 28, 84, 212, 632, 1544, 4584, 11220, 33060, 80152, 234648, 565192, 1643552, 3926832, 11337422, 26852656, 76981660]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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