OFFSET
1,1
COMMENTS
Area of the obtuse scalene triangle with sides of lengths 2, 3 and 4, the scalene triangle with least integer side lengths.
This is the area of the ninth-smallest triangle with integer side lengths, or the eighth-smallest triangle if two smaller triangles with the same area are counted only once (see A331251). - Hugo Pfoertner, Feb 12 2020
LINKS
Daniel Starodubtsev, Table of n, a(n) for n = 1..10000
FORMULA
3*sqrt(15)/4 = 3*A010472/4.
EXAMPLE
2.90473750965556266388444904983679970812469127896869311994068032458511231895...
MATHEMATICA
RealDigits[(3Sqrt[15])/4, 10, 120][[1]] (* Harvey P. Dale, Apr 03 2013 *)
CROSSREFS
KEYWORD
cons,nonn
AUTHOR
Rick L. Shepherd, May 14 2008
STATUS
approved