OFFSET
1,5
COMMENTS
The rooks placements are considered different when they cannot be obtained by a rotation and/or reflection of another solution that leaves the board inchanged. - Alain Brobecker, Dec 19 2021
a(n) = A350191(n) for n <> 10,13,16,19,... - Vaclav Kotesovec, Dec 20 2021
LINKS
CROSSREFS
KEYWORD
nonn,more,hard
AUTHOR
Alain Brobecker, Dec 10 2021
EXTENSIONS
a(17)-a(18) from Vaclav Kotesovec, Dec 19 2021
STATUS
approved