Usually means: Sum of consecutive squared integers.
Definitions Related words Mentions
We found 6 dictionaries that define the word pyramidal numbers:

General (5 matching dictionaries)
  1. pyramidal numbers: Wordnik
  2. pyramidal numbers: Wiktionary
  3. Pyramidal numbers: Dictionary.com
  4. pyramidal numbers: FreeDictionary.org
  5. Pyramidal numbers: TheFreeDictionary.com

Computing (1 matching dictionary)
  1. pyramidal numbers: Encyclopedia

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