A122511 Number of n-node labeled trivalent (or cubic) graphs with connectivity 1.

0, 0, 0, 0, 113400, 134719200, 206367361200, 441231126336000, 1314804135572928000, 5371366122198236160000, 29519910833205467394720000, 214250468144929272764547840000

Offset

1,5

References

R. W. Robinson, Numerical implementation of graph counting algorithms, AGRC Grant, Math. Dept., Univ. Newcastle, Australia, 1977.

Links

R. W. Robinson, Table of n, a(n) for n = 1..30

Crossrefs

Sequence in context: A252036 A103113 A179922 * A172549 A172589 A172692

Adjacent sequences: A122508 A122509 A122510 * A122512 A122513 A122514

Keyword

nonn

Author

N. J. A. Sloane, Nov 13 2006

Status

approved