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A123852
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Decimal expansion of (1*(2*(3*...)^(1/3))^(1/3))^(1/3).
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7
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1, 1, 5, 6, 3, 6, 2, 6, 8, 4, 3, 3, 2, 2, 6, 9, 7, 1, 6, 8, 5, 3, 3, 7, 0, 3, 2, 2, 8, 8, 7, 3, 6, 9, 3, 5, 6, 5, 1, 3, 0, 1, 4, 5, 4, 3, 8, 9, 1, 8, 8, 8, 6, 3, 7, 9, 9, 9, 2, 5, 9, 5, 9, 8, 9, 8, 3, 1, 7, 7, 8, 1, 6, 0, 7, 2, 8, 2, 6, 1, 9, 4, 6, 0, 7, 9, 0, 8, 1, 3, 3, 8, 2, 0, 3, 7, 8, 3, 1, 7
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OFFSET
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1,3
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COMMENTS
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Cubic recurrence constant (see A123851): a cubic analog of Somos's quadratic recurrence constant A112302.
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REFERENCES
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S. R. Finch, Mathematical Constants, Cambridge University Press, Cambridge, 2003, p. 446.
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LINKS
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FORMULA
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Product_{n>=1} n^(1/3^n).
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EXAMPLE
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1.156362684332269716853370322887369356513014543891888637999259598983177816...
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MATHEMATICA
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Take[RealDigits[Product[N[n^3^-n, 200], {n, 400}]][[1]], 100].
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PROG
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CROSSREFS
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KEYWORD
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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