A378342 Number of n edge connected achiral planar maps with an external face in which all internal faces are triangles.
1, 0, 1, 2, 1, 4, 6, 7, 15, 22, 33, 59, 94, 140, 249, 388, 617, 1040, 1675, 2628, 4481, 7108, 11494, 19030, 30885, 49315, 82559, 132406, 215326, 353923, 576552, 928437, 1539504, 2485102, 4051828, 6636368, 10830526, 17524893, 28903185, 46838466, 76464837, 125019717
Offset: 3
Keywords
Links
- Andrew Howroyd, Table of n, a(n) for n = 3..100