A262391 Erroneous duplicate of A000944.
0, 0, 0, 1, 2, 6, 34, 257, 2606, 440564, 6384634, 96262938, 1496225352, 23833988129, 387591510244, 6415851530241, 107854282197058
Offset: 1
Keywords
Examples
For n=4 the only possible shape is a tetrahedron with four triangle sides. For n=5 the only possible shapes are the square pyramid and triangular prism.