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A337309 Number of main classes of bachelor diagonal Latin squares of order n. 1
0, 0, 0, 0, 1, 2, 967, 4871991, 3292326080087 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,6
COMMENTS
A bachelor diagonal Latin square is one with no orthogonal mate.
LINKS
E. I. Vatutin, Special types of diagonal Latin squares, Cloud and distributed computing systems in electronic control conference, within the National supercomputing forum (NSCF - 2022). Pereslavl-Zalessky, 2023. pp. 9-18. (in Russian)
FORMULA
a(n) = A287764(n) - A330391(n).
CROSSREFS
Sequence in context: A332192 A258586 A176940 * A172386 A079233 A194191
KEYWORD
nonn,more,hard
AUTHOR
Eduard I. Vatutin, Aug 22 2020
EXTENSIONS
a(9) added by Eduard I. Vatutin, Dec 08 2020
STATUS
approved

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Last modified March 28 04:55 EDT 2024. Contains 371235 sequences. (Running on oeis4.)