A202142 - OEIS

A202142

Decimal expansion of 4/sqrt((1+sqrt(5))/2).

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

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

OFFSET

1,1

LINKS

Table of n, a(n) for n=1..99.

David Richeson, A pyramidologist's value for pi (2011).

FORMULA

Equals 4/sqrt(phi).

EXAMPLE

3.1446055110296931442782343433718357180924882313508929506596...

MATHEMATICA

RealDigits[4/Sqrt[GoldenRatio], 10, 120][[1]] (* Amiram Eldar, Jun 11 2023 *)