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A177742 The number of strong vertex magic total labelings of all 2-regular simple graphs on 2n+1 vertices. 1
1, 1, 9, 45, 566, 6294, 125160, 2384157, 71563278 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,3
COMMENTS
A simple counting argument shows that no 2-regular graph of even order possesses a strong VMTL.
In 2-regular graphs we can swap the interpretation of edges and vertices; so this sequence also gives the number of super edge magic total labelings; hence c.f. the (n,n) diagonal of A060408.
LINKS
CROSSREFS
Row sums of triangle A177741.
Sequence in context: A145757 A058824 A244302 * A322892 A355175 A352398
KEYWORD
hard,more,nonn
AUTHOR
Jason Kimberley, May 17 2010
STATUS
approved

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Last modified July 20 20:50 EDT 2024. Contains 374459 sequences. (Running on oeis4.)