Number of connected dominating sets in the n-gear graph.

Terms

a(0) =7a(1) =21a(2) =45a(3) =129a(4) =373a(5) =1177a(6) =3741a(7) =12065a(8) =38949a(9) =125993a(10) =407597a(11) =1318961a(12) =4268085a(13) =13811769a(14) =44695613a(15) =144638017a(16) =468058181a(17) =1514668105a(18) =4901568589a(19) =15861809233a(20) =51329892437a(21) =166107021401a(22) =537533612125