A380152 Decimal expansion of 864/275.

3, 1, 4, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1

Offset

1,1

Comments

This approximation of Pi was calculated by Fibonacci studying the 96-gon and published in 1220 in Practica geometriae (see Gullberg).

References

Jan Gullberg, Mathematics from the Birth of Numbers, W. W. Norton & Co., NY & London, 1997, §3.6 The Quest for Pi, p. 91.

Links

Table of n, a(n) for n=1..100.

Example

3.1418181818181818181818181818181818181818181818...

Mathematica

RealDigits[864/275, 10, 100][[1]]

Crossrefs

Cf. A000796, A068028, A380109.

Sequence in context: A318841 A300238 A180062 * A340072 A079546 A014413

Adjacent sequences: A380149 A380150 A380151 * A380153 A380154 A380155

Keyword

nonn,cons,easy

Author

Stefano Spezia, Jan 13 2025

Status

approved