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A264787
Number of colorings of an n X n grid with any number of interchangeable colors under rotational and reflectional symmetry.
4
1, 1, 7, 2966, 1310397193, 579823814813639193, 477464341236883456112705749206, 1340767144321669800049265230788088027597024910, 21516767919669856366796245458194341840929552797762722429430679631
OFFSET
0,3
REFERENCES
F. Harary and E. Palmer, Graphical Enumeration, Academic Press, 1973.
CROSSREFS
KEYWORD
nonn
AUTHOR
Marko Riedel, Nov 24 2015
STATUS
approved