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A335760 Irregular table read by rows: n-sect the angles of a heptagon. Then T(n,k) = number of k-sided polygons in that figure for k >= 3.

%I A335760 #13 Jul 20 2020 18:57:37
%S A335760 0,0,0,0,1,14,21,56,0,0,0,0,0,0,0,0,0,1,84,28,35,7,7,0,1,182,56,14,
%T A335760 189,196,70,21,0,7,0,0,0,0,0,1,280,210,42,378,252,140,63,7,7,0,0,0,0,
%U A335760 0,1,238,196,14,448,588,126,63,21,14,0,0,0,0,0,1
%N A335760 Irregular table read by rows: n-sect the angles of a heptagon. Then T(n,k) = number of k-sided polygons in that figure for k >= 3.
%C A335760 For n<=200 no polygon has more than 14 edges.
%C A335760 See A335757 for illustrations.
%H A335760 Lars Blomberg, <a href="/A335760/b335760.txt">Table of n, a(n) for n = 1..1777</a> (the first 200 rows)
%e A335760 The table begins
%e A335760 0, 0, 0, 0, 1;
%e A335760 14;
%e A335760 21, 56, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1;
%e A335760 84, 28;
%e A335760 35, 7, 7, 0, 1;
%e A335760 182, 56, 14;
%e A335760 189, 196, 70, 21, 0, 7, 0, 0, 0, 0, 0, 1;
%e A335760 280, 210, 42;
%e A335760 378, 252, 140, 63, 7, 7, 0, 0, 0, 0, 0, 1;
%e A335760 238, 196, 14;
%e A335760 448, 588, 126, 63, 21, 14, 0, 0, 0, 0, 0, 1;
%Y A335760 Cf. A329714 (n-sected sides, not angles), A335757 (regions), A335758 (vertices), A335759 (edges).
%K A335760 nonn,tabf
%O A335760 1,6
%A A335760 _Lars Blomberg_, Jun 22 2020