A110547 Number of sides of regular polygons whose interior angles (in degrees) are not integers.

7, 11, 13, 14, 16, 17, 19, 21, 22, 23, 25, 26, 27, 28, 29, 31, 32, 33, 34, 35, 37, 38, 39, 41, 42, 43, 44, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 73

Offset

1,1

Comments

Numbers not divisors of 360.

Links

Table of n, a(n) for n=1..53.

Formula

a(n)=[(n-2)*180)]/n

Example

a(3)=13 because the third polygone whose interior angle in degrees is not an integer is the 13-gone.

Crossrefs

Cf. A069976, A100659, A018412.

Sequence in context: A084451 A091901 A072823 * A279622 A247819 A051660

Adjacent sequences: A110544 A110545 A110546 * A110548 A110549 A110550

Keyword

easy,nonn

Author

Alexandre Wajnberg, Sep 11 2005

Status

approved