login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A079744 Number of positions that are exactly n moves from the starting position in the Pyraminx puzzle. 0
1, 8, 48, 288, 1728, 9896, 51808, 220111, 480467, 166276, 2457, 32 (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 933120. The trivial turns of the tips are ignored.

If tips are included the total number of positions is 933120 * 3^4 = 75582720.

REFERENCES

Computed by John Francis and Louis Robichaud.

D. R. Hofstadter, Metamagical Themas, Basic Books, NY, 1985, p. 358.

LINKS

Table of n, a(n) for n=0..11.

Mark Longridge, God's Algorithm Calculations for Rubik's Cube...

Jaap Scherphuis, Puzzle Pages

CROSSREFS

Sequence in context: A231109 A079743 A079765 * A079746 A079745 A079758

Adjacent sequences:  A079741 A079742 A079743 * A079745 A079746 A079747

KEYWORD

nonn,fini,full

AUTHOR

N. J. A. Sloane, Feb 20 2003

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 1 14:52 EDT 2020. Contains 333163 sequences. (Running on oeis4.)