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a(n) is the number of regions formed by n-secting the angles of a heptagon.
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%I #10 Jun 22 2020 13:20:28

%S 1,14,78,112,50,252,484,532,848,448,1261,1316,1751,1862,1590,2436,

%T 3053,3136,3872,2912,4607,4844,5629,5824,5335,6734,7813,7966,9073,

%U 7056,10186,10500,11712,11984,11299,13258,14701,14980,16486,14406,17998,18312,19972

%N a(n) is the number of regions formed by n-secting the angles of a heptagon.

%H Lars Blomberg, <a href="/A335757/b335757.txt">Table of n, a(n) for n = 1..200</a>

%H Lars Blomberg, <a href="/A335757/a335757.png">Illustration for n=3</a>

%H Lars Blomberg, <a href="/A335757/a335757_1.png">Illustration for n=4</a>

%H Lars Blomberg, <a href="/A335757/a335757_2.png">Illustration for n=21</a>

%H Lars Blomberg, <a href="/A335757/a335757_3.png">Illustration for n=22</a>

%Y Cf. A329713 (n-sected sides, not angles), A335758 (vertices), A335759 (edges), A335760 (ngons).

%K nonn

%O 1,2

%A _Lars Blomberg_, Jun 22 2020