a(n) is the number of rooted quadrangulations of the projective plane with n vertices.
A316598
a(n) is the number of rooted quadrangulations of the projective plane with n vertices.
Terms
- a(0) =5a(1) =38a(2) =331a(3) =3098a(4) =30330a(5) =306276a(6) =3163737a(7) =33252050a(8) =354312946a(9) =3817498004a(10) =41510761346a(11) =454882507468
External references
- oeis: A316598