%N Number of distinct convex heptagons that can be formed from n congruent isosceles right triangles. Reflections are not counted as distinct.
%C Illustrated with other convex polyabolos in A245676.
%H Douglas J. Durian, <a href="/A292149/b292149.txt">Table of n, a(n) for n = 1..750</a>
%e The smallest convex heptagonal polyabolos are for n = 15 (symmetrical) and n = 17 (asymmetrical).
%Y Strictly less than A245676.
%A _Douglas J. Durian_, Sep 13 2017
%E a(33) and beyond from _Douglas J. Durian_, Jan 25 2020