Number of n-node (unlabeled) connected graphs with girth 5.

A128242

Number of n-node (unlabeled) connected graphs with girth 5.

Terms

    a(0) =0a(1) =0a(2) =1a(3) =1a(4) =5a(5) =16a(6) =66a(7) =266a(8) =1235a(9) =6350a(10) =37364a(11) =251106a(12) =1942085a(13) =17287710a(14) =177086792a(15) =2084120446a(16) =28125888087a(17) =434318629496

External references