This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A110547 #10 Sep 05 2024 17:09:14 %S A110547 7,11,13,14,16,17,19,21,22,23,25,26,27,28,29,31,32,33,34,35,37,38,39, %T A110547 41,42,43,44,46,47,48,49,50,51,52,53,54,55,56,57,58,59,61,62,63,64,65, %U A110547 66,67,68,69,70,71,73,74,75,76,77,78,79,80,81,82,83,84,85,86 %N A110547 Number of sides of regular polygons whose interior angles (in degrees) are not integers. %C A110547 Numbers that are not divisors of 360. %e A110547 a(3)=13 because the third polygon whose interior angle in degrees is not an integer is the 13-gon. %t A110547 Select[Range[86],!Divisible[360,#] &] (* _Stefano Spezia_, Sep 05 2024 *) %Y A110547 Cf. A069976, A100659, A018412. %K A110547 easy,nonn %O A110547 1,1 %A A110547 _Alexandre Wajnberg_, Sep 11 2005