A243273 Number of unlabeled simple graphs with n nodes that are Hamiltonian and integral.

0, 0, 0, 1, 7, 43, 379, 6185, 177071, 9305068

Offset

1,5

Links

Table of n, a(n) for n=1..10.

Travis Hoppe and Anna Petrone, Encyclopedia of Finite Graphs.

Travis Hoppe and Anna Petrone, Integer sequence discovery from small graphs, arXiv preprint arXiv:1408.3644 [math.CO], 2014.

Eric Weisstein's World of Mathematics, Hamiltonian Graph.

Eric Weisstein's World of Mathematics, Integral Graph.

Crossrefs

Cf. A003216 (Hamiltonian graphs), A064731 (integral graphs).

Sequence in context: A127999 A208595 A121675 * A377154 A292502 A294361

Adjacent sequences: A243270 A243271 A243272 * A243274 A243275 A243276

Keyword

nonn,more

Author

Travis Hoppe and Anna Petrone, Jun 02 2014

Status

approved