a(n) is the number of canonical polygons with 4n alternating straight and diagonal edges.
A307387
a(n) is the number of canonical polygons with 4n alternating straight and diagonal edges.
Terms
- a(0) =1a(1) =9a(2) =191a(3) =8049a(4) =418184a(5) =24283599
External references
- oeis: A307387