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A215016
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Decimal expansion of the product of 1 - 1/2^2^n over all n >= 0.
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9
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3, 5, 0, 1, 8, 3, 8, 6, 5, 4, 3, 9, 5, 6, 9, 6, 0, 8, 8, 6, 6, 5, 5, 4, 5, 2, 6, 9, 6, 6, 1, 7, 8, 8, 6, 7, 6, 4, 2, 0, 8, 6, 5, 0, 2, 1, 7, 6, 9, 2, 1, 7, 6, 9, 7, 0, 6, 4, 8, 2, 3, 3, 8, 6, 0, 4, 8, 2, 5, 6, 3, 0, 5, 3, 6, 8, 6, 9, 6, 4, 4, 1
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OFFSET
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0,1
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COMMENTS
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LINKS
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FORMULA
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Equals Product_{n>=0} (1 - 1/A001146(n)).
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EXAMPLE
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0.35018386543956960886655452696617886764208650217692176970648233860482563...
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MATHEMATICA
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RealDigits[NProduct[1 - 1/2^2^n, {n, 0, Infinity}, WorkingPrecision -> 120]][[1]] (* Alonso del Arte, Jul 31 2012 *)
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PROG
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(PARI) prodinf(n=0, 1-1.>>2^n)
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CROSSREFS
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KEYWORD
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AUTHOR
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STATUS
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approved
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