A179552 Decimal expansion of the volume of pentagonal pyramid with edge length 1.

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

Offset

0,1

Comments

Pentagonal pyramid: 6 faces, 6 vertices, and 10 edges.

Links

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

Wolfram Alpha, Johnson solid 2

Index entries for algebraic numbers, degree 2

Formula

Digits of (5+sqrt(5))/24.

Example

0.3015028323958245706837155695304698431433590983171469051779540518921...

Mathematica

RealDigits[N[(5+Sqrt[5])/24, 200]]

Prog

(PARI) (5+sqrt(5))/24 \\ Charles R Greathouse IV, Oct 30 2023

Crossrefs

Cf. A001622, A010527, A102208, A179290, A179292, A179294, A179449, A179450, A179451, A179452.

Sequence in context: A207543 A191532 A333852 * A119879 A115714 A346242

Adjacent sequences: A179549 A179550 A179551 * A179553 A179554 A179555

Keyword

nonn,cons,easy

Author

Vladimir Joseph Stephan Orlovsky, Jul 19 2010

Status

approved