Numbers of isomers of unbranched a-4-catapolyheptagons - see Brunvoll reference for precise definition.
A121139
Numbers of isomers of unbranched a-4-catapolyheptagons - see Brunvoll reference for precise definition.
Terms
- a(0) =1a(1) =3a(2) =11a(3) =48a(4) =228a(5) =1080a(6) =5112a(7) =23920a(8) =110848
External references
- oeis: A121139