Number of catacondensed coronoid systems with n hexagons with a single hole.
A122671
Number of catacondensed coronoid systems with n hexagons with a single hole.
Terms
- a(0) =1a(1) =3a(2) =15a(3) =62a(4) =312a(5) =1435a(6) =6785
External references
- oeis: A122671