login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A079820 Number of positions that are exactly n moves from the starting position in the Rubik's UFO puzzle. 1
1, 5, 20, 79, 306, 1185, 4550, 17240, 64582, 236713, 841951, 2825790, 7998476, 14330740, 11028854, 2546648, 19660 (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 39916800. Here we consider a move to be any twist or 60-degree disk turn.

LINKS

Table of n, a(n) for n=0..16.

Jaap Scherphuis, Puzzle Pages

CROSSREFS

Cf. A079819.

Sequence in context: A271887 A079737 A028814 * A275907 A117422 A154639

Adjacent sequences:  A079817 A079818 A079819 * A079821 A079822 A079823

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 November 22 01:14 EST 2019. Contains 329383 sequences. (Running on oeis4.)