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A079737 Number of positions that are exactly n moves from the starting position in the Hockey Puck puzzle. 2
1, 5, 20, 78, 297, 1130, 4225, 15472, 54143, 178274, 508805, 1062164, 1195536, 557174, 51373, 103 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

This is the number of positions that can be reached in n moves from the start, but which cannot be reached in fewer than n moves.

A puzzle in the Rubik cube family. The total number of distinct positions is 10! = 3628800. Here we only use moves of types a-e.

LINKS

Table of n, a(n) for n=0..15.

Jaap Scherphuis, Puzzle Pages

CROSSREFS

Cf. A079735-A079738.

Sequence in context: A289786 A129869 A271887 * A028814 A079820 A275907

Adjacent sequences:  A079734 A079735 A079736 * A079738 A079739 A079740

KEYWORD

nonn,fini,full

AUTHOR

N. J. A. Sloane, Feb 20 2003

STATUS

approved

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Last modified May 26 18:08 EDT 2020. Contains 334630 sequences. (Running on oeis4.)