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A234473
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Decimal expansion of exp(exp(1)-1).
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4
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5, 5, 7, 4, 9, 4, 1, 5, 2, 4, 7, 6, 0, 8, 8, 0, 6, 2, 3, 9, 6, 6, 9, 7, 5, 9, 2, 2, 7, 4, 0, 4, 8, 4, 3, 0, 5, 7, 0, 6, 0, 9, 3, 0, 9, 7, 5, 9, 4, 7, 0, 0, 2, 1, 1, 9, 2, 9, 8, 2, 3, 7, 8, 3, 8, 5, 7, 0
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OFFSET
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1,1
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COMMENTS
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Derived from an infinite sum of the Bell numbers (see formula below).
May also be written as exp(exp(1))/exp(1) = e^e/e.
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LINKS
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FORMULA
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Equals Sum_{n>=0} Bell(n)/n!, where Bell(n) = A000110(n).
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EXAMPLE
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5.5749415247608806239669759227404843057060930975947002119298237838570...
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MATHEMATICA
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RealDigits[Exp[E-1], 10, 100][[1]] (* Amiram Eldar, Dec 04 2021 *)
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PROG
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(PARI) exp(exp(1)-1)
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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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