A200728 Decimal expansion of the circumradius of cyclic quadrilateral with sides 1, 2, 3, 4.

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

Offset

1,1

Comments

Area is K = sqrt(24) = 4.89897948556635619639... (decimal expansion in A010480).

Links

Table of n, a(n) for n=1..86.

Zak Seidov, Figure showing polygon.

Formula

R = (385/96)^(1/2).

Example

2.0026024734496526299517...

Mathematica

RealDigits[Sqrt[385/96], 10, 120][[1]] (* Amiram Eldar, Jun 27 2023 *)

Prog

(PARI) sqrt(385/96) \\ Charles R Greathouse IV, Dec 28 2011

Crossrefs

Cf. A090654, A010480, A200113, A200257.

Sequence in context: A244522 A292945 A024690 * A066209 A284455 A333250

Adjacent sequences: A200725 A200726 A200727 * A200729 A200730 A200731

Keyword

nonn,easy,cons

Author

Zak Seidov, Nov 21 2011

Status

approved