A133237 Number of bipartite planar graphs with 2n nodes and exactly one zero eigenvector.

0, 0, 0, 1, 2, 7, 67, 322, 1123, 10548, 81127

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, A133236.

Sequence in context: A042051 A196925 A246865 * A099660 A341088 A207978

Adjacent sequences: A133234 A133235 A133236 * A133238 A133239 A133240

Keyword

nonn

Author

N. J. A. Sloane, Oct 14 2007

Status

approved