A343964 Decimal expansion of 18 + 2*sqrt(3).

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

Offset: 1

Author

Wesley Ivan Hurt, May 05 2021

Keywords

• nonn
• cons

Comments

Surface area of a rhombicuboctahedron with unit edge length.

Essentially the same sequence of digits as A176394 and A010469. - R. J. Mathar, May 07 2021

Examples

			21.464101615137754587054892683011744733885...
		

Links

• Wikipedia, Rhombicuboctahedron

Crossrefs

Cf. A343965 (rhombicuboctahedron volume).

Programs

Magma

SetDefaultRealField(RealField(100)); 18+2*Sqrt(3);

Mathematica

RealDigits[N[18 + 2*Sqrt[3], 100]][[1]] (* Wesley Ivan Hurt, Nov 12 2022 *)