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

A286184

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

Terms

    a(0) =6a(1) =19a(2) =56a(3) =157a(4) =430a(5) =1171a(6) =3204a(7) =8857a(8) =24794a(9) =70303a(10) =201712a(11) =584677a(12) =1708998a(13) =5028715a(14) =14873180a(15) =44160817a(16) =131499442a(17) =392401207a(18) =1172747208a(19) =3508804477a(20) =10506490526a(21) =31477528579a(22) =94344505396a(23) =282848966857a(24) =848161024650

External references