Location via proxy:   [ UP ]  
[Report a bug]   [Manage cookies]                

Revision History for A126012

(Bold, blue-underlined text is an addition; faded, red-underlined text is a deletion.)

Showing all changes.
A106486-encoding of the canonical representative of the combinatorial game with code n.
(history; published version)
#4 by Russ Cox at Sat Mar 31 13:21:13 EDT 2012
AUTHOR

_Antti Karttunen (His-Firstname.His-Surname(AT)gmail.com), _, Dec 18 2006

Discussion
Sat Mar 31
13:21
OEIS Server: https://oeis.org/edit/global/881
#3 by N. J. A. Sloane at Thu Nov 11 07:34:06 EST 2010
LINKS

A. Karttunen, <a href="/A126000/a126000.scm.txt">Scheme-program for computing this sequence.</a>

KEYWORD

nonn,new

nonn

#2 by N. J. A. Sloane at Fri Feb 27 03:00:00 EST 2009
LINKS

A. Karttunen, <a href="http://www.research.att.com/~njas/sequences/a126000.scm.txt">Scheme-program for computing this sequence.</a>

KEYWORD

nonn,new

nonn

#1 by N. J. A. Sloane at Fri Jan 12 03:00:00 EST 2007
NAME

A106486-encoding of the canonical representative of the combinatorial game with code n.

DATA

0, 1, 2, 3, 4, 4, 6, 6, 0, 9, 2, 3, 12, 12, 6, 6, 0, 1, 18, 3, 4, 4, 6, 6, 0, 9, 18, 3, 12, 12, 6, 6, 32, 33, 32, 33, 36, 36, 36, 36, 32, 33, 32, 33, 36, 36, 36, 36, 48, 33, 48, 33, 36, 36, 36, 36, 48, 33, 48, 33, 36, 36, 36, 36, 0, 1, 66, 67, 4, 4, 6, 6, 0, 9, 66, 67, 12, 12, 6, 6

OFFSET

0,3

LINKS

A. Karttunen, <a href="http://www.research.att.com/~njas/sequences/a126000.scm.txt">Scheme-program for computing this sequence.</a>

EXAMPLE

25 (= 2^(2*2) + 2^(2*0) + 2^(1+2*1)) encodes the game {-1,0|1}, where, as the option -1 is dominated by option 0, the former can be deleted, giving us the game {0|1}, i.e. the canonical (minimal) form of the game 1/2, encoded as 2^(2*0) + 2^(1+2*1) = 9, thus a(25)=9 and a(9)=9. Similarly a(65536)=1, as 65536 (= 2^(2*(2^(1+2*1)))) encodes the game {{|1}|}, which is reversible to the game {0|}, i.e. the game 1, which is encoded as 2^(2*0) = 1.

CROSSREFS

A126011 gives the distinct terms (and also the records).

KEYWORD

nonn

AUTHOR

Antti Karttunen (His-Firstname.His-Surname(AT)gmail.com), Dec 18 2006

STATUS

approved