A110547 - OEIS

%I #10 Sep 05 2024 17:09:14

%S 7,11,13,14,16,17,19,21,22,23,25,26,27,28,29,31,32,33,34,35,37,38,39,

%T 41,42,43,44,46,47,48,49,50,51,52,53,54,55,56,57,58,59,61,62,63,64,65,

%U 66,67,68,69,70,71,73,74,75,76,77,78,79,80,81,82,83,84,85,86

%N Number of sides of regular polygons whose interior angles (in degrees) are not integers.

%C Numbers that are not divisors of 360.

%e a(3)=13 because the third polygon whose interior angle in degrees is not an integer is the 13-gon.

%t Select[Range[86],!Divisible[360,#] &] (* _Stefano Spezia_, Sep 05 2024 *)

%Y Cf. A069976, A100659, A018412.

%K easy,nonn

%O 1,1

%A _Alexandre Wajnberg_, Sep 11 2005