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URL: https://oeis.org/A388095

⇱ A388095 - OEIS


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A388095
Decimal expansion of exp(Pi / 4) / 2.
1
1, 0, 9, 6, 6, 4, 0, 0, 2, 5, 3, 6, 9, 0, 0, 7, 7, 2, 8, 2, 7, 9, 8, 8, 4, 8, 2, 9, 6, 3, 9, 3, 6, 9, 1, 1, 1, 7, 3, 0, 8, 1, 8, 8, 2, 0, 9, 9, 7, 1, 3, 6, 1, 6, 7, 4, 2, 9, 0, 0, 7, 9, 5, 9, 3, 2, 8, 5, 1, 3, 4, 3, 2, 0, 9, 4, 6, 1, 8, 4, 6, 7, 0, 6, 3, 2, 6
OFFSET
1,3
FORMULA
Empirical: Equals Sum_{k>=0} A001936(k) / exp(k*Pi).
EXAMPLE
1.0966400253690077282798848296393691117...
MATHEMATICA
First[RealDigits[Exp[Pi/4]/2, 10, 100]]
PROG
(PARI) 1/2 * exp(1/4 * Pi)
CROSSREFS
Cf. A001936.
Sequence in context: A309822 A195365 A092513 * A388085 A388108 A381155
KEYWORD
nonn,cons
AUTHOR
Simon Plouffe, Sep 14 2025
STATUS
approved