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A141848 Decimal expansion of the Pell constant. 1
5, 8, 0, 5, 7, 7, 5, 5, 8, 2, 0, 4, 8, 9, 2, 4, 0, 2, 2, 9, 0, 0, 4, 3, 8, 9, 2, 2, 9, 7, 0, 2, 5, 7, 4, 7, 7, 6, 6, 0, 4, 6, 7, 6, 5, 6, 0, 7, 3, 3, 3, 2, 5, 0, 9, 1, 9, 5, 5, 0, 0, 8, 3, 3, 6, 8, 2, 2, 7, 9, 4, 9, 1, 2, 7, 2, 9, 0, 8, 0, 6, 0, 8, 9, 9, 7, 6, 7, 5, 4, 5, 2, 5, 7, 6, 1, 8, 0, 4, 4, 9, 7, 1, 4, 1 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

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

Eric Weisstein's World of Mathematics, PellConstant

FORMULA

1 - QPochhammer[1/2, 1/4].

1 - prod(n>=0, 1 - 1/2^(2*n+1) ). - Jean-Fran├žois Alcover, May 20 2014

EXAMPLE

0.58057755820489240229...

MATHEMATICA

RealDigits[1-QPochhammer[1/2, 1/4], 10, 120][[1]] (* Harvey P. Dale, Dec 17 2011 *)

CROSSREFS

Sequence in context: A198360 A153420 A193505 * A140249 A081564 A199073

Adjacent sequences:  A141845 A141846 A141847 * A141849 A141850 A141851

KEYWORD

nonn,cons

AUTHOR

Eric W. Weisstein, Jul 11 2008

STATUS

approved

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Last modified September 17 04:03 EDT 2019. Contains 327119 sequences. (Running on oeis4.)