A218878 - OEIS

%I #6 May 25 2018 10:23:45

%S 2,1,1,2,1,1,2,2,3,1,1,2,1,2,2,4,2,1,1,2,2,1,2,4,5,1,1,2,1,2,2,2,3,3,

%T 2,4,2,1,2,4,2,2,1,2,2,2,2,4,8,1,2

%N Number of components of the poset Sigma(n) arising from classification of primitive integral triangles with rectangular defect n.

%H Andy Miller, <a href="https://doi.org/10.1016/j.disc.2012.09.013">Trees of integral triangles with given rectangular defect</a>, Discrete Math., 313 (2012), 50-66.

%Y Cf. A218879.

%K nonn

%O 1,1

%A _N. J. A. Sloane_, Nov 26 2012