%I #9 Oct 20 2014 17:15:12

%S 1,1,1,1,2,2,1,1,2,2,1,1,1,3,1,1,3,1,1,1,2

%N Arises in enumeration of Ehrhart polynomials for triangles.

%C (Needs a more precise definition.)

%H E. J. Ionascu, <a href="http://arxiv.org/abs/1107.0695">Ehrhart's polynomial for equilateral triangles in Z^3</a>, arXiv preprint arXiv:1107.0695, 2011. See Table 1.

%K nonn

%O 1,5

%A _N. J. A. Sloane_, Nov 01 2011