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!)
A289812 n for which a Factor Pair Latin Square of order n exists. 0
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17, 18, 19, 21, 22, 23, 25, 26, 27, 29, 31, 32 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

This sequences differs from A206551 because no Factor Pair Latin Square of order 45 exists.

It is known that every prime power (A000961) as well as twice every prime number (A100484) appears in this sequence.

LINKS

Table of n, a(n) for n=1..27.

James Hammer, Factor Pair Latin Squares, Dissertation, Auburn University, 2015.

CROSSREFS

Cf. A000961, A100484, A206551.

Sequence in context: A065200 A325361 A325397 * A206551 A338190 A247762

Adjacent sequences:  A289809 A289810 A289811 * A289813 A289814 A289815

KEYWORD

nonn,hard,more

AUTHOR

Jordan Lenchitz, Leah S. Miller, Makkah Davis, Bob Kuo, Boyang Su, James Hammer, Jul 12 2017

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 March 4 07:25 EST 2021. Contains 341781 sequences. (Running on oeis4.)