Number of connected induced (non-null) subgraphs of the friendship graph with 2n+1 nodes.

A286186

Number of connected induced (non-null) subgraphs of the friendship graph with 2n+1 nodes.

Terms

    a(0) =7a(1) =22a(2) =73a(3) =268a(4) =1039a(5) =4114a(6) =16405a(7) =65560a(8) =262171a(9) =1048606a(10) =4194337a(11) =16777252a(12) =67108903a(13) =268435498a(14) =1073741869a(15) =4294967344a(16) =17179869235a(17) =68719476790a(18) =274877907001

External references