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A058881
Erroneous version of A051504.
0
OFFSET
1,3
REFERENCES
F. Harary and E. M. Palmer, Graphical Enumeration, Academic Press, NY, 1973, p. 220.
CROSSREFS
Sequence in context: A260535 A220380 A051504 * A100520 A221342 A221298
KEYWORD
dead
STATUS
approved