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A002075
Number of equivalence classes with primitive period n of base 3 necklaces, where necklaces are equivalent under rotation and permutation of symbols.
(Formerly M1160 N0443)
+0
7
1, 1, 2, 4, 8, 22, 52, 140, 366, 992, 2684, 7404, 20440, 56992, 159440, 448540, 1266080, 3587610, 10195276, 29057520, 83018728, 237737984, 682196948, 1961323740, 5648590728, 16294032160, 47071589778, 136171440600
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
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Last modified December 7 23:50 EST 2009. Contains 170430 sequences.
AT&T Labs Research
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