Rhombic Dodecahedral Number
A Figurate Number which is constructed as a centered Cube with a Square Pyramid appended to each face,
where
is a Centered Cube Number and 
is a Pyramidal Number. The first few are 1, 15, 65,175, 369, 671, ... (Sloane's A005917). The Generating Function of the rhombic dodecahedral numbers is
See also Octahedral Number
References
Conway, J. H. and Guy, R. K. The Book of Numbers. New York: Springer-Verlag, pp. 53-54, 1996. Sloane, N. J. A. SequenceA005917/M4968in ``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.
- Trigonometry Values Pi/17
- Trigonometry Values Pi/18
- Trigonometry Values Pi/2
- Trigonometry Values Pi/20
- Trigonometry Values Pi/3
- Cycle (Circle)
- Cycle Graph
- Cycle (Map)
- Cycle (Permutation)
- Cyclic Graph
- Cyclic Group
- Cyclic Hexagon
- Cyclic-Inscriptable Quadrilateral
- Cyclic Number
- Cyclic Pentagon
- Cyclic Permutation
- Cyclic Polygon
- Cyclic Quadrangle
- Cyclic Quadrilateral
- Cyclic Redundancy Check
- Cyclid
- Cyclide
- Cyclidic Coordinates
- Cycloid
- Cycloid Evolute