Figurate Number: Square Pyramidal (c-thru, ctrd)

3D Model

[Cycle w/ J/K keys.]

LINKS:
- Short video clip explaining specifics.
- Fundamentals video.
- MathWorld: Figurate numbers; & Square pyramidal numbers.
- Slideshow w/ some details on figurate numbers.
- LOTS of details on the On-Line Encyclopedia of Integer Sequences (OEOIS).

RELATED SCENES: 1, 2, 3, 4, 5, 6.