Number of nonisomorphic unrooted unicursal planar maps with n edges.

A069730

Number of nonisomorphic unrooted unicursal planar maps with n edges.

Terms

    a(0) =1a(1) =2a(2) =4a(3) =13a(4) =50a(5) =248a(6) =1407a(7) =8600a(8) =55154a(9) =365292a(10) =2473956a(11) =17053468a(12) =119191992a(13) =842688120a(14) =6015275094a(15) =43292026736a(16) =313788095994

External references