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

1,1

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

Links

Table of n, a(n) for n=1..100.

Wikipedia, Rhombicuboctahedron

Example

21.464101615137754587054892683011744733885...

Mathematica

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

Prog

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

Crossrefs

Cf. A343965 (rhombicuboctahedron volume).

Sequence in context: A367286 A193902 A043302 * A345135 A291057 A143897

Adjacent sequences: A343961 A343962 A343963 * A343965 A343966 A343967

Keyword

nonn,cons

Author

Wesley Ivan Hurt, May 05 2021

Status

approved