A363961 Number of connected non-quadratically embeddable graphs on n nodes.

0, 0, 0, 0, 2, 27, 401, 7943, 234182

Offset

1,5

Links

Table of n, a(n) for n=1..9.

Eric Weisstein's World of Mathematics, Quadratically Embeddable Graph

Formula

a(n) = A001349(n) - A363960(n).

Crossrefs

Cf. A363960 (quadratically embeddable graphs).

Sequence in context: A278790 A277832 A221674 * A240701 A240638 A245050

Adjacent sequences: A363958 A363959 A363960 * A363962 A363963 A363964

Keyword

nonn,more

Author

Eric W. Weisstein, Jun 29 2023

Status

approved