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A218975
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Number of connected cyclic conjugacy classes of subgroups of the alternating group.
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0
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1, 1, 0, 1, 1, 1, 2, 1, 3, 3, 4, 2, 8, 2
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OFFSET
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0,7
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COMMENTS
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a(n) is also the number of connected even partitions of n in the following sense. Given a partition of n, the vertices are the parts of the partition and two vertices are connected if and only if their gcd is greater than 1. We call a partition connected if the graph is connected.
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CROSSREFS
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KEYWORD
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nonn,more
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AUTHOR
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STATUS
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approved
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