A377299 Decimal expansion of the volume of a truncated cube with unit edge length.

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

Offset: 2

Author

Paolo Xausa, Oct 25 2024

Keywords

• nonn
• cons
• easy

Examples

			13.599663291074443561074547379645257699991802085...
		

Links

• Eric Weisstein's World of Mathematics, Truncated Cube.
• Wikipedia, Truncated cube.

Crossrefs

Cf. A377298 (surface area), A294968 (circumradius), A010503 (midradius - 1), A377296 (Dehn invariant, negated).

Cf. A131594.

Programs

Mathematica

First[RealDigits[7 + 14*Sqrt[2]/3, 10, 100]] (* or *)
First[RealDigits[PolyhedronData["TruncatedCube", "Volume"], 10, 100]]

Formula

Equals 7 + (14/3)*sqrt(2) = 7 + 14*A131594.