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A335803 Irregular table read by rows: n-sect the angles of a decagon. Then T(n,k) = number of k-sided polygons in that figure for k >= 3.

%I A335803 #5 Jun 25 2020 06:26:56
%S A335803 0,0,0,0,0,0,0,1,10,30,120,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,50,150,240,
%T A335803 60,20,0,0,0,0,0,0,0,0,0,0,0,0,0,1,250,140,40,10,300,510,130,30,0,10,
%U A335803 0,0,0,0,0,0,0,0,0,0,0,1,120,90,10
%N A335803 Irregular table read by rows: n-sect the angles of a decagon. Then T(n,k) = number of k-sided polygons in that figure for k >= 3.
%e A335803 The table begins
%e A335803 0, 0, 0, 0, 0, 0, 0, 1;
%e A335803 10;
%e A335803 30, 120, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1;
%e A335803 50;
%e A335803 150, 240, 60, 20, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1;
%e A335803 250, 140, 40, 10;
%e A335803 300, 510, 130, 30, 0, 10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1;
%Y A335803 Cf. A332417 (n-sected sides, not angles), A335800 (regions), A335801 (vertices), A335802 (edges).
%K A335803 nonn,tabf
%O A335803 1,9
%A A335803 _Lars Blomberg_, Jun 25 2020