A388248 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

A388248

Decimal expansion of exp(Pi / 4) / 2^(3/4).

1

1, 3, 0, 4, 1, 3, 2, 1, 2, 0, 7, 6, 5, 5, 8, 8, 5, 2, 1, 6, 3, 4, 5, 3, 5, 6, 8, 1, 0, 8, 8, 5, 6, 2, 8, 7, 0, 8, 1, 1, 5, 5, 5, 4, 4, 5, 1, 8, 8, 4, 6, 0, 9, 3, 7, 3, 4, 6, 9, 8, 8, 1, 4, 6, 1, 7, 3, 3, 2, 4, 8, 6, 8, 0, 5, 7, 9, 3, 2, 1, 7, 0, 8, 7, 1, 7, 2

(list; constant; graph; refs; listen; history; text; internal format)

OFFSET

1,2

LINKS

Table of n, a(n) for n=1..87.

Simon Plouffe, Numbers in the base e^Pi, 2025.

Index entries for transcendental numbers.

FORMULA

Empirical: Equals Sum_{k>=0} A022571(k) / exp(k*Pi).

EXAMPLE

1.3041321207655885216345356810885628708...

MATHEMATICA

First[RealDigits[Exp[Pi/4]/2^(3/4), 10, 100]]

PROG

(PARI) (1/2) * exp(Pi / 4) * 2^(1/4)

CROSSREFS

Sequence in context: A385001 A238573 A346965 * A325491 A306803 A319974

Adjacent sequences: A388245 A388246 A388247 * A388249 A388250 A388251

KEYWORD

nonn,cons,changed

AUTHOR

Simon Plouffe, Sep 15 2025

STATUS

approved