Number of connected triangle-free planar graphs with n nodes.

A049368

Number of connected triangle-free planar graphs with n nodes.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =3a(4) =6a(5) =18a(6) =55a(7) =230a(8) =1063a(9) =6161a(10) =41004a(11) =312782a(12) =2618995a(13) =23549346a(14) =222764216

External references