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A090734 Decimal expansion of 4th Madelung constant (negated). 8
1, 8, 3, 9, 3, 9, 9, 0, 8, 4, 0, 4, 5, 0, 4, 7, 0, 6, 6, 2, 4, 7, 3, 0, 5, 4, 7, 9, 5, 6, 7, 2, 3, 0, 4, 7, 6, 4, 2, 2, 7, 8, 3, 5, 9, 4, 8, 1, 7, 7, 3, 0, 5, 7, 9, 1, 6, 7, 9, 7, 8, 6, 7, 7, 5, 7, 2, 8, 1, 8, 2, 5, 2, 6, 4, 3, 7, 3, 3, 5, 2, 2, 8, 4, 1, 5, 8, 7, 4, 1, 3, 3, 9, 6, 6, 0, 3, 7, 7, 6, 0, 2, 9, 3, 6 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

1,2

REFERENCES

S. R. Finch, Mathematical Constants, Cambridge, 2003, p. 77

LINKS

Table of n, a(n) for n=1..105.

FORMULA

M_4=-8*(5-3*sqrt(2))*zeta(1/2)*zeta(-1/2)=-1.83939908...

PROG

(PARI) 8*(5-3*sqrt(2))*zeta(1/2)*zeta(-1/2) \\ Charles R Greathouse IV, Jun 07 2016

CROSSREFS

Cf. A088537, A085469.

Sequence in context: A170937 A058265 A135005 * A200614 A011467 A246671

Adjacent sequences:  A090731 A090732 A090733 * A090735 A090736 A090737

KEYWORD

cons,nonn

AUTHOR

Benoit Cloitre, Jan 18 2004

STATUS

approved

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Last modified November 19 08:42 EST 2019. Contains 329318 sequences. (Running on oeis4.)