A377341 Decimal expansion of the surface area of a truncated octahedron with unit edge length.

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

Offset: 2

Author

Paolo Xausa, Oct 25 2024

Keywords

• nonn
• cons
• easy

Examples

			26.78460969082652752232935609807046840331366304572...
		

Links

• Eric Weisstein's World of Mathematics, Truncated Octahedron.
• Wikipedia, Truncated octahedron.

Crossrefs

Cf. A377342 (volume), A020797 (circumradius/10), A152623 (midradius).

Cf. A010469 (analogous for a regular octahedron).

Cf. A002194.

Programs

Mathematica

First[RealDigits[6 + 12*Sqrt[3], 10, 100]] (* or *)
First[RealDigits[PolyhedronData["TruncatedOctahedron", "SurfaceArea"], 10, 100]]

Formula

Equals 6 + 12*sqrt(3) = 6 + 12*A002194.