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A316535 Number of domino tilings (or dimer coverings) of a 2n X 2n square not counting reflections and rotations. 0
1, 1, 9, 930, 1629189, 32324350352, 6632560613086062, 14025276099356126574624, 305611096281378760240051639364, 68617947901923542714137396006469280000, 158748001407029479280360099562172057138013219144, 3784212561528950376893775523091796640110288722110632534528 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,3
COMMENTS
This is the sequence A004003 after removing rotations and reflections. The corresponding terms of A004003 are: 1, 2, 36, 6728, ... .
REFERENCES
References cited in A004003.
LINKS
CROSSREFS
Cf. A004003.
Sequence in context: A283801 A015107 A024124 * A036255 A070233 A087590
KEYWORD
nonn
AUTHOR
Steven Lord, Jul 06 2018
EXTENSIONS
a(6)-a(11) from Andrew Howroyd, Jul 17 2018
STATUS
approved

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Last modified July 18 18:59 EDT 2024. Contains 374388 sequences. (Running on oeis4.)