A243338 Number of simple connected graphs with n nodes that are trees and not integral.

0, 0, 1, 2, 2, 5, 10, 23, 47, 105

Offset

1,4

Links

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

Travis Hoppe and Anna Petrone, Encyclopedia of Finite Graphs

T. Hoppe and A. Petrone, Integer sequence discovery from small graphs, arXiv preprint arXiv:1408.3644, 2014

Crossrefs

Cf. A241842 (non-integral graphs), A000055 (tree graphs).

Sequence in context: A317877 A075125 A081374 * A245306 A296530 A117400

Adjacent sequences: A243335 A243336 A243337 * A243339 A243340 A243341

Keyword

nonn,more

Author

Travis Hoppe and Anna Petrone, Jun 03 2014

Status

approved