Number of isomeric aza-benzenoids with two nitrogen atoms and n hexagons.

A121950

Number of isomeric aza-benzenoids with two nitrogen atoms and n hexagons.

Terms

    a(0) =3a(1) =10a(2) =48a(3) =243a(4) =1326a(5) =7349a(6) =41030a(7) =228694a(8) =1270663a(9) =7031737

External references