Number of edge covers of fan graph F_{2,n}.

Terms

a(0) =1a(1) =16a(2) =154a(3) =1289a(4) =10180a(5) =78372a(6) =596337a(7) =4512900a(8) =34064998a(9) =256825009a(10) =1935169456a(11) =14577526976a(12) =109797758833a(13) =826945679592