Triangle read by rows: T(n,k) is the number of embeddings on the sphere of 2-connected homeomorphically irreducible planar graphs with n nodes and k faces, k=4..2n-4.
A378075
Triangle read by rows: T(n,k) is the number of embeddings on the sphere of 2-connected homeomorphically irreducible planar graphs with n nodes and k faces, k=4..2n-4.
Terms
- a(0) =1a(1) =0a(2) =1a(3) =1a(4) =0a(5) =1a(6) =3a(7) =3a(8) =2a(9) =0a(10) =0a(11) =3a(12) =11a(13) =18a(14) =10a(15) =5a(16) =0a(17) =0a(18) =3a(19) =19a(20) =77a(21) =134a(22) =123a(23) =50a(24) =14a(25) =0a(26) =0a(27) =0a(28) =13a(29) =146
External references
- oeis: A378075