A344078 Decimal expansion of 5*sqrt(2)/3 + 3*sqrt(3)/2.

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

Offset

1,1

Comments

Decimal expansion of the volume of an elongated triangular orthobicupola with unit edge length.

Links

Table of n, a(n) for n=1..93.

Wikipedia, Elongated triangular orthobicupola

Index entries for algebraic numbers, degree 4.

Formula

Minimal polynomial 1296*x^4-31896*x^2+1849. - R. J. Mathar, Jun 03 2026

This^2 = 443/36+5*sqrt(6). - R. J. Mathar, Jun 03 2026

Example

4.9550988153084743549...

Mathematica

RealDigits[5 Sqrt[2]/3 + 3 Sqrt[3]/2, 10, 200][[1]]

Prog

(PARI) 5*sqrt(2)/3+3*sqrt(3)/2 \\ Charles R Greathouse IV, May 19 2026

Crossrefs

Sequence in context: A065796 A070434 A011003 * A200011 A200241 A243710

Adjacent sequences: A344075 A344076 A344077 * A344079 A344080 A344081

Keyword

cons,nonn

Author

Wesley Ivan Hurt, May 08 2021

Status

approved