A239120 - OEIS

A239120

Decimal expansion of 1/2 - Pi/8.

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

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OFFSET

0,3

LINKS

Table of n, a(n) for n=0..104.

Index entries for transcendental numbers

FORMULA

Equals 1/2 - A019675 = A210958/2.

Equals Sum_{k>=1} zeta(2*k)/16^k. - Amiram Eldar, May 27 2021

Equals Sum_{k >= 1} (-1)^(k+1)/(4*k^2 - 1)^2. - Peter Bala, Feb 28 2024

EXAMPLE

0.10730091830127584519216957709006213947535382507811....