A287995 Number of connected (non-null) induced subgraphs in the n-Andrásfai graph.

3, 21, 173, 1563, 13863, 118797, 991175, 8127097, 65937979, 531691453, 4272259775, 34260885697, 274450101955, 2197181305541, 17584291437255

Offset

1,1

Links

Table of n, a(n) for n=1..15.

Eric Weisstein's World of Mathematics, Andrásfai Graph

Eric Weisstein's World of Mathematics, Vertex-Induced Subgraph

Crossrefs

Sequence in context: A247480 A365136 A228923 * A379086 A257675 A372108

Adjacent sequences: A287992 A287993 A287994 * A287996 A287997 A287998

Keyword

nonn,more

Author

Eric W. Weisstein, Jun 04 2017

Extensions

a(11)-a(15) from Pontus von Brömssen, Aug 27 2022

Status

approved