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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A165740 Positive integers n such that solution to the toric n x n "Lights Out" puzzle is not unique (up to the order of flippings; each flipping appears at most once). 1
3, 5, 6, 9, 10, 12, 15, 17, 18, 20, 21, 24, 25, 27, 30, 31, 33, 34, 35, 36, 39, 40, 42, 45, 48, 50, 51, 54, 55, 57, 60, 62, 63, 65, 66, 68, 69, 70, 72, 75, 78, 80, 81, 84, 85, 87, 90, 93, 95, 96, 99, 100, 102, 105, 108, 110, 111, 114, 115, 117, 119, 120, 123, 124, 125, 126 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Complement to the sequence A165741 in the set of positive integers.

REFERENCES

See A165738 for the references.

LINKS

Table of n, a(n) for n=1..66.

FORMULA

n is in this sequence iff A165738(n)>0.

CROSSREFS

Cf. A159257, A075462, A117870, A165741.

Sequence in context: A187833 A081121 A187837 * A080307 A001969 A075311

Adjacent sequences:  A165737 A165738 A165739 * A165741 A165742 A165743

KEYWORD

nonn

AUTHOR

Max Alekseyev, Sep 25 2009

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified May 26 00:29 EDT 2013. Contains 225650 sequences.