A386695 Decimal expansion of the volume of a snub disphenoid with unit edges.

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

Offset

0,1

Comments

The snub disphenoid is Johnson solid J_84.

Links

Paolo Xausa, Table of n, a(n) for n = 0..10000

Wikipedia, Snub disphenoid.

Formula

Equals the largest real root of 5832*x^6 - 1377*x^4 - 2160*x^2 - 4.

Example

0.85949364619130053155540963697973639270749722...

Mathematica

First[RealDigits[Root[5832*#^6 - 1377*#^4 - 2160*#^2 - 4 &, 2], 10, 100]] (* or *)
First[RealDigits[PolyhedronData["J84", "Volume"], 10, 100]]

Crossrefs

Cf. A010482 (surface area).

Cf. A386696.

Sequence in context: A132717 A200487 A070473 * A154210 A380601 A198996

Adjacent sequences: A386692 A386693 A386694 * A386696 A386697 A386698

Keyword

nonn,cons,easy

Author

Paolo Xausa, Jul 31 2025

Status

approved