Related to enumeration of free catapolyoctagons (see Cyvin reference for precise definition).
A121120
Related to enumeration of free catapolyoctagons (see Cyvin reference for precise definition).
Terms
- a(0) =1a(1) =1a(2) =6a(3) =32a(4) =245a(5) =1926a(6) =16119a(7) =137475a(8) =1194854a(9) =10517058a(10) =93593287a(11) =840500847a(12) =7607643154a(13) =69331324533a(14) =635651786601
External references
- oeis: A121120