1,4
V. A. Liskovets, Some identities for enumerators of circulant graphs.
V. A. Liskovets and R. Poeschel, On the enumeration of circulant graphs of prime-power and square-free orders
R. Poeschel, Publications
There is an easy formula for prime orders. Formulae are also known for square-free and prime-squared orders. The subsequent values for orders 29, 31 are 586, 1096.
Cf. A049297, A049287, A049289.
Sequence in context: A049911 A056712 A002087 this_sequence A102946 A026094 A069860
Adjacent sequences: A049285 A049286 A049287 this_sequence A049289 A049290 A049291
nonn,nice
V. A. Liskovets (liskov(AT)im.bas-net.by)
Further values for (twice) square-free and (twice) prime-squared orders can be found in the Liskovets reference.
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