A338584 Number of unlabeled nonplanar connected graphs with n edges with minimum degree 3 at each node that are not 3-connected.

1, 6, 28, 128, 558, 2421, 10675, 47810, 217572, 1006211

Offset

13,2

Links

Table of n, a(n) for n=13..22.

Hugo Pfoertner, Illustration of terms a(13) and a(14).

Formula

a(n) = A338593(n) - A338583(n).

Crossrefs

Cf. A006290, A007112, A123545, A338583, A338593, A338594, A338604.

Sequence in context: A117423 A351053 A171859 * A084778 A287807 A155588

Adjacent sequences: A338581 A338582 A338583 * A338585 A338586 A338587

Keyword

nonn,more

Author

Hugo Pfoertner, Nov 21 2020

Status

approved