A179638 Decimal expansion of the volume of gyroelongated square pyramid with edge length 1.

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

Offset

1,3

Comments

Gyroelongated square pyramid: 9 vertices, 20 edges, and 13 faces.

Links

Table of n, a(n) for n=1..105.

Wolfram Alpha, Johnson solid 10

Formula

Digits of (sqrt(2)+2 sqrt(4+3 sqrt(2)))/6.

Example

1.19270224223223255906019842837725158155262551828862015707793142188822...

Mathematica

RealDigits[N[(Sqrt[2]+2*Sqrt[4+3*Sqrt[2]])/6, 200]]

Crossrefs

Cf. A001622, A010527, A102208, A179290, A179292, A179294, A179449, A179450, A179451, A179452, A179552, A179553, A179554, A179587, A179588, A179589, A179590, A179591, A179592, A179593, A179637.

Sequence in context: A011436 A248317 A332631 * A224268 A019877 A252898

Adjacent sequences: A179635 A179636 A179637 * A179639 A179640 A179641

Keyword

cons,nonn,easy

Author

Vladimir Joseph Stephan Orlovsky, Jul 21 2010

Status

approved