OFFSET
1,1
COMMENTS
Exradius opposite the side of length 4 of the obtuse scalene triangle with sides of lengths 2, 3 and 4, the scalene triangle with least integer side lengths. See formulas in the Weisstein link.
LINKS
Daniel Starodubtsev, Table of n, a(n) for n = 1..10000
Eric Weisstein's World of Mathematics, Exradius.
EXAMPLE
5.80947501931112532776889809967359941624938255793738623988136064917022463790...
MATHEMATICA
First[RealDigits[3 Sqrt[15]/2, 10, 100]] (* Paolo Xausa, Oct 30 2023 *)
PROG
(PARI) 3*sqrt(15)/2
CROSSREFS
KEYWORD
cons,nonn
AUTHOR
Rick L. Shepherd, May 14 2008
STATUS
approved