a(n) is the number of non-isomorphic geometric realizations (rectilinear drawings) of K_{2,n}.
A180487
a(n) is the number of non-isomorphic geometric realizations (rectilinear drawings) of K_{2,n}.
Terms
- a(0) =1a(1) =2a(2) =4a(3) =12a(4) =39a(5) =182a(6) =1033a(7) =7605a(8) =66302
External references
- oeis: A180487