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A309669 Number of ways of placing 2*n-1 nonattacking queens on a hexagonal board with edge-length n in Glinski's hexagonal chess, inequivalent up to rotations and reflections of the board. 4
1, 0, 0, 1, 0, 0, 0, 1, 0, 3, 0, 7, 30, 133, 581 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,10
LINKS
CROSSREFS
Sequence in context: A198488 A296364 A071296 * A013450 A013421 A011081
KEYWORD
nonn,more
AUTHOR
Vaclav Kotesovec, Aug 16 2019
EXTENSIONS
a(15) from Vaclav Kotesovec, Aug 28 2019
STATUS
approved

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Last modified April 21 09:27 EDT 2024. Contains 371851 sequences. (Running on oeis4.)