Number of minimal edge covers in the n-gear graph.

Terms

a(0) =2a(1) =6a(2) =15a(3) =38a(4) =90a(5) =200a(6) =434a(7) =934a(8) =1995a(9) =4237a(10) =8976a(11) =19010a(12) =40300a(13) =85591a(14) =182231a(15) =389094a(16) =833306a(17) =1790141a(18) =3857190a(19) =8334719a(20) =18057605a(21) =39217422a(22) =85357692a(23) =186142694a(24) =406619110a(25) =889555565a(26) =1948564239a(27) =4273011841a(28) =9379101468a(29) =20603197661