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A133236 Number of bipartite planar graphs with 2n nodes and at least one zero eigenvector. 1
0, 1, 0, 1, 11, 8, 70, 613, 1225, 11330, 120628 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,5

REFERENCES

Sciriha, I. and Fowler, P.W., Nonbonding Orbitals in Fullerenes: Nuts and Cores in Singular Polyhedral Graphs J. Chem. Inf. Model., 47, 5, 1763 - 1775, 2007.

LINKS

Table of n, a(n) for n=2..12.

CROSSREFS

Cf. A000109, A007083, A133237.

Sequence in context: A244447 A206420 A304699 * A038322 A299972 A090075

Adjacent sequences:  A133233 A133234 A133235 * A133237 A133238 A133239

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Oct 14 2007

STATUS

approved

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Last modified April 22 10:20 EDT 2019. Contains 322330 sequences. (Running on oeis4.)