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A140248 Decimal expansion of .3*sqrt(15). 11
1, 1, 6, 1, 8, 9, 5, 0, 0, 3, 8, 6, 2, 2, 2, 5, 0, 6, 5, 5, 5, 3, 7, 7, 9, 6, 1, 9, 9, 3, 4, 7, 1, 9, 8, 8, 3, 2, 4, 9, 8, 7, 6, 5, 1, 1, 5, 8, 7, 4, 7, 7, 2, 4, 7, 9, 7, 6, 2, 7, 2, 1, 2, 9, 8, 3, 4, 0, 4, 4, 9, 2, 7, 5, 8, 1, 0, 9, 3, 7, 1, 0, 0, 5, 5, 7, 8, 6, 2, 1, 3, 0, 5, 7, 6, 0, 2, 0, 5, 5, 3, 7, 4, 8, 9 (list; constant; graph; refs; listen; history; internal format)
OFFSET

1,3

COMMENTS

Exradius opposite the side of length 2 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

Eric Weisstein's World of Mathematics, Exradius.

FORMULA

.3*sqrt(15) = .3*A010472 = .4*A140239 = .6*A088543 = .2*A140249.

EXAMPLE

1.16189500386222506555377961993471988324987651158747724797627212983404492758...

PROG

(PARI) .3*sqrt(15)

CROSSREFS

Cf. A140239, A140240, A140241, A140242, A140243, A140244, A140245, A140246, A140247, A140249, A088543, A010472.

Sequence in context: A145314 A011490 A011395 * A127169 A202351 A111507

Adjacent sequences:  A140245 A140246 A140247 * A140249 A140250 A140251

KEYWORD

cons,nonn

AUTHOR

Rick L. Shepherd (rshepherd2(AT)hotmail.com), May 14 2008

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Last modified February 17 10:05 EST 2012. Contains 206009 sequences.