A185199 - OEIS

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A185199

Decimal expansion of 4/Pi^2.

19

4, 0, 5, 2, 8, 4, 7, 3, 4, 5, 6, 9, 3, 5, 1, 0, 8, 5, 7, 7, 5, 5, 1, 7, 8, 5, 2, 8, 3, 8, 9, 1, 0, 5, 5, 5, 6, 1, 7, 4, 3, 5, 0, 9, 8, 6, 8, 8, 9, 8, 6, 1, 9, 5, 3, 8, 2, 4, 3, 6, 1, 2, 7, 5, 7, 6, 6, 9, 2, 4, 8, 3, 8, 4, 8, 9, 4, 1, 7, 6, 4, 7, 6, 4, 8, 3, 7, 0, 9, 5, 7, 0, 2, 4, 8, 7, 3, 5, 0

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OFFSET

0,1

COMMENTS

Density of the odd squarefree numbers A056911. - Charles R Greathouse IV, Jun 08 2016

REFERENCES

C. F. Gauss, Disquisitiones Arithmeticae, Yale, 1965; see p. 359.

LINKS

G. C. Greubel, Table of n, a(n) for n = 0..5000

Index entries for transcendental numbers

EXAMPLE

0.40528473456935108577551785283891055561743509868898619538243...

MATHEMATICA

RealDigits[4/Pi^2, 10, 50][[1]] (* G. C. Greubel, Jun 24 2017 *)

PROG

(PARI) 4/Pi^2 \\ Charles R Greathouse IV, Jun 08 2016

CROSSREFS

Sequence in context: A083745 A327545 A306072 * A201196 A377636 A019906

Adjacent sequences: A185196 A185197 A185198 * A185200 A185201 A185202

KEYWORD

cons,nonn

AUTHOR

N. J. A. Sloane, Feb 19 2011

STATUS

approved