Number of embeddings on the sphere of 2-connected homeomorphically irreducible planar graphs with n edges.
A378076
Number of embeddings on the sphere of 2-connected homeomorphically irreducible planar graphs with n edges.
Terms
- a(0) =1a(1) =0a(2) =1a(3) =2a(4) =3a(5) =6a(6) =16a(7) =37a(8) =100a(9) =293a(10) =888a(11) =2822a(12) =9305a(13) =31274a(14) =106972a(15) =370828a(16) =1298058a(17) =4582413a(18) =16289759a(19) =58259600a(20) =209465186
External references
- oeis: A378076