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A180310
Decimal expansion of Pi/2 - 4/Pi.
2
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
OFFSET
0,1
COMMENTS
Torsional rigidity constant for a half-disk shaped shaft.
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
KEYWORD
nonn,cons
AUTHOR
Eric W. Weisstein, Aug 26 2010
STATUS
approved