Number of "long curves", i.e., topological types of smooth embeddings of the oriented real line into the oriented plane that coincide with the standard immersion x -> (x,0) in the neighborhood of -infinity and +infinity.

A054993

Number of "long curves", i.e., topological types of smooth embeddings of the oriented real line into the oriented plane that coincide with the standard immersion x -> (x,0) in the neighborhood of -infinity and +infinity.

Terms

    a(0) =1a(1) =2a(2) =8a(3) =42a(4) =260a(5) =1796a(6) =13396a(7) =105706a(8) =870772a(9) =7420836a(10) =65004584a(11) =582521748a(12) =5320936416a(13) =49402687392a(14) =465189744448

External references