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A180310 Decimal expansion of -4/Pi + Pi/2. 0
2, 9, 7, 5, 5, 6, 7, 8, 2, 0, 5, 9, 7, 3, 3, 9, 3, 3, 0, 8, 0, 2, 5, 1, 5, 8, 4, 6, 5, 9, 6, 3, 6, 5, 4, 5, 8, 2, 2, 9, 0, 7, 5, 3, 3, 7, 6, 3, 9, 0, 1, 3, 2, 0, 5, 0, 6, 1, 3, 3, 5, 4, 3, 6, 8, 2, 7, 3, 3, 8, 2, 2, 0, 6, 9, 2, 9, 2, 2, 1, 8, 5, 9, 3, 1, 0, 6, 9, 9, 0, 5, 4, 1, 0, 3, 3, 8, 4, 6, 3, 4, 2, 4, 9, 1 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

Torsional rigidity constant for a half-disk shaped shaft.

LINKS

Table of n, a(n) for n=0..104.

EXAMPLE

0.29755678205973393308...

MATHEMATICA

RealDigits[-4/Pi+Pi/2, 10, 120][[1]] (* Harvey P. Dale, May 02 2012 *)

CROSSREFS

Sequence in context: A309928 A176977 A202473 * A268086 A021340 A241753

Adjacent sequences:  A180307 A180308 A180309 * A180311 A180312 A180313

KEYWORD

nonn,cons

AUTHOR

Eric W. Weisstein, Aug 26 2010

STATUS

approved

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Last modified March 28 20:01 EDT 2020. Contains 333103 sequences. (Running on oeis4.)