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A289849 Cardinality of the maximal set of ordered factor pairs such that a Quasi-Factor Pair Latin Square of order n exists. 0
1, 2, 2, 3, 2, 4, 2, 4, 3, 4, 2, 5, 2, 4, 4, 5, 2, 6, 2, 5, 4, 4, 2, 6, 3, 4, 4, 5, 2 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

For n a prime power or twice a prime, a(n) is known to coincide with A000005(n).

LINKS

Table of n, a(n) for n=1..29.

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

CROSSREFS

Cf. A000005.

Sequence in context: A080256 A327527 A337454 * A299701 A286605 A035149

Adjacent sequences:  A289846 A289847 A289848 * A289850 A289851 A289852

KEYWORD

nonn,hard,more

AUTHOR

Leah S. Miller, Jordan Lenchitz, Makkah Davis, Bob Kuo, Boyang Su, James Hammer, Jul 13 2017

STATUS

approved

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Last modified December 7 07:57 EST 2021. Contains 349571 sequences. (Running on oeis4.)