A388668 - OEIS

A388668

Decimal expansion of sqrt(5 * (2+sqrt(5))) * exp(-Pi/2).

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

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OFFSET

0,1

LINKS

Table of n, a(n) for n=0..86.

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

Index entries for transcendental numbers.

FORMULA

Empirical: Equals Sum_{k>=0} A145708(k) / exp(k*Pi).

EXAMPLE

0.95670553290826884811869042314062456947256553089432567803116120359223120370....

MATHEMATICA