A140245 Decimal expansion of 180*arccos(-1/4)/Pi.

1, 0, 4, 4, 7, 7, 5, 1, 2, 1, 8, 5, 9, 2, 9, 9, 2, 3, 8, 7, 8, 7, 7, 1, 0, 3, 4, 7, 9, 9, 1, 2, 7, 1, 6, 6, 0, 0, 5, 1, 3, 1, 5, 9, 7, 6, 2, 4, 5, 5, 6, 6, 1, 6, 4, 7, 6, 0, 5, 0, 1, 1, 8, 0, 0, 8, 8, 5, 1, 2, 9, 3, 5, 8, 0, 7, 2, 7, 4, 5, 1, 5, 6, 7, 4, 5, 8, 9, 0, 9, 7, 9, 3, 3, 3, 5, 7, 1, 8, 3, 2, 5, 8, 5, 8

Offset

3,3

Comments

Angle in degrees of the obtuse angle of the obtuse scalene triangle with sides of lengths 2, 3 and 4, the scalene triangle with least integer side lengths.

A140241 + A140243 + this constant = 180.

Links

Table of n, a(n) for n=3..107.

Formula

Equals 180*A140244/Pi.

Example

104.477512185929923878771034799127166005131597624556616476050118008851293580...

Mathematica

RealDigits[180 * ArcCos[-1/4]/Pi, 10, 120][[1]] (* Amiram Eldar, Mar 26 2026 *)

Prog

(PARI) 180*acos(-1/4)/Pi

Crossrefs

Cf. A140239, A140240, A140241, A140242, A140243, A140244, A140246, A140247, A140248, A140249.

Sequence in context: A342819 A016711 A023404 * A200364 A147814 A168233

Adjacent sequences: A140242 A140243 A140244 * A140246 A140247 A140248

Keyword

cons,nonn

Author

Rick L. Shepherd, May 14 2008

Status

approved