Related to enumeration of free catapolyoctagons (see Cyvin reference for precise definition).
A121121
Related to enumeration of free catapolyoctagons (see Cyvin reference for precise definition).
Terms
- a(0) =0a(1) =1a(2) =3a(3) =26a(4) =189a(5) =1616a(6) =13768a(7) =120362a(8) =1061728a(9) =9465862a(10) =85081948a(11) =770462984a(12) =7022416575a(13) =64379117809a(14) =593274806744
External references
- oeis: A121121