Number of benzenoids with 21 hexagons, C_(2h) symmetry and containing 2n carbon atoms.
A121964
Number of benzenoids with 21 hexagons, C_(2h) symmetry and containing 2n carbon atoms.
Terms
- a(0) =1a(1) =13a(2) =45a(3) =188a(4) =587a(5) =1588a(6) =4547a(7) =11377a(8) =24111a(9) =47515a(10) =85645a(11) =124260a(12) =117943
External references
- oeis: A121964