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A140246
Decimal expansion of sqrt(15)/6.
12
6, 4, 5, 4, 9, 7, 2, 2, 4, 3, 6, 7, 9, 0, 2, 8, 1, 4, 1, 9, 6, 5, 4, 4, 2, 3, 3, 2, 9, 7, 0, 6, 6, 6, 0, 1, 8, 0, 5, 4, 8, 6, 9, 5, 0, 8, 8, 1, 9, 3, 1, 8, 0, 4, 4, 3, 1, 2, 6, 2, 2, 9, 4, 3, 5, 2, 2, 4, 7, 1, 8, 1, 9, 8, 9, 4, 9, 6, 5, 0, 5, 5, 8, 6, 5, 4, 7, 8, 9, 6, 1, 4, 3, 1, 1, 2, 2, 5, 2, 9, 8, 6, 0, 5, 0
OFFSET
0,1
COMMENTS
Inradius of the obtuse scalene triangle with sides of lengths 2, 3 and 4, the scalene triangle with least integer side lengths. Per the Weisstein link, the inradius is the area divided by the semiperimeter.
LINKS
Eric Weisstein's World of Mathematics, Inradius.
FORMULA
sqrt(15)/6 = A010472/6 = 2*A140239/9.
EXAMPLE
0.64549722436790281419654423329706660180548695088193180443126229435224718198...
MATHEMATICA
RealDigits[Sqrt[15]/6, 10, 120][[1]] (* Harvey P. Dale, Mar 31 2013 *)
PROG
(PARI) sqrt(15)/6
CROSSREFS
Equals sqrt(A331257(8)/A331258(8)) (squared inradii of triangles with integer sides).
Sequence in context: A106332 A247319 A342359 * A130786 A197295 A372995
KEYWORD
cons,nonn
AUTHOR
Rick L. Shepherd, May 14 2008
STATUS
approved