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A292852
Spherical congruence-uniform lattices on n unlabeled nodes
1
1, 1, 0, 1, 1, 2, 3, 8, 17, 45, 123, 367, 1148, 3792
OFFSET
1,6
COMMENTS
A lattice is congruence-uniform if it can be constructed from the singleton-lattice by a sequence of interval doublings. A lattice is spherical if its Möbius function between least and greatest element equals 1 or -1.
LINKS
CROSSREFS
Cf. A292790.
Sequence in context: A319566 A294450 A345243 * A148014 A148015 A148016
KEYWORD
nonn,more
AUTHOR
Henri Mühle, Sep 25 2017
EXTENSIONS
a(13)-a(14) from Henri Mühle, Aug 29 2019
STATUS
approved