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A239545 Decimal expansion of Sum_{k>=0} (-1)^k/((2k+1)*(2k+3)*(2k+5)). 0
0, 5, 9, 3, 6, 5, 7, 4, 8, 3, 6, 5, 3, 9, 0, 8, 2, 1, 4, 7, 4, 4, 9, 7, 0, 8, 9, 5, 7, 6, 6, 0, 4, 5, 2, 7, 1, 9, 1, 3, 1, 2, 8, 4, 1, 5, 8, 8, 5, 5, 4, 8, 9, 4, 2, 8, 8, 5, 3, 4, 7, 4, 0, 7, 0, 5, 1, 4, 3, 7, 1, 7, 4, 5, 2, 4, 4, 2, 7, 9, 1, 4, 9, 5, 1, 7, 1, 0 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

0,2

REFERENCES

L. B. W. Jolley, Summation of series, Dover Publications Inc. (New York), 1961, p. 44 (series n. 240).

LINKS

Table of n, a(n) for n=0..87.

FORMULA

Equals Pi/8 - 1/3 = A019675 - A010701.

EXAMPLE

0.0593657483653908214744970895766045271913128415885548942885347407051...

MATHEMATICA

RealDigits[Pi/8 - 1/3, 10, 90, -1][[1]]

PROG

(PARI) Pi/8-1/3 \\ Charles R Greathouse IV, May 05 2014

CROSSREFS

Cf. A000796; A005408: odd numbers; A021016: Sum_{k>=0} 1/((2k+1)*(2k+3)*(2k+5)).

Sequence in context: A021948 A306883 A256500 * A228402 A154265 A198133

Adjacent sequences:  A239542 A239543 A239544 * A239546 A239547 A239548

KEYWORD

nonn,cons

AUTHOR

Bruno Berselli, Mar 21 2014

STATUS

approved

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Last modified November 14 07:29 EST 2019. Contains 329111 sequences. (Running on oeis4.)