Star Number
The number of cells in a generalized Chinese checkers board (or ``centered'' Hexagram).
 | (1) |
The first A006060), and canbe computed using
 |  |  | (2) |
|  | (3) |
The first few A006061). Square star numbers are obtained by solving the Diophantine Equation
 | (4) |
 | (5) |
References
Gardner, M. ``Hexes and Stars.'' Ch. 2 in Time Travel and Other Mathematical Bewilderments. New York: W. H. Freeman, 1988. Hindin, H. ``Stars, Hexes, Triangular Numbers, and Pythagorean Triples.'' J. Recr. Math. 16, 191-193, 1983-1984. Sloane, N. J. A. SequencesA003154/M4893,A006060/M5425, andA006061/M5385in ``An On-Line Version of the Encyclopedia of Integer Sequences.''http://www.research.att.com/~njas/sequences/eisonline.html and Sloane, N. J. A. and Plouffe, S.The Encyclopedia of Integer Sequences. San Diego: Academic Press, 1995.
- Spherical Bessel Function
- Spherical Bessel Function of the First Kind
- Spherical Bessel Function of the Second Kind
- Spherical Bessel Function of the Third Kind
- Spherical Cap
- Spherical Coordinates
- Spherical Design
- Spherical Excess
- Spherical Frustum
- Spherical Geometry
- Spherical Hankel Function of the First Kind
- Spherical Hankel Function of the Second Kind
- Spherical Harmonic
- Spherical Harmonic Addition Theorem
- Spherical Harmonic Closure Relations
- Spherical Harmonic Tensor
- Spherical Helix
- Spherical Point System
- Spherical Polygon
- Spherical Ring
- Spherical Sector
- Spherical Segment
- Spherical Shell
- Spherical Spiral
- Spherical Symmetry