squared triangular number

the sum of the first n cubes, which equals the square of the nth triangular number

en-GB/ˈskwɛəd tɹaɪˈænɡjʊlə ˈnʌmbə/
en-US/ˈskwɛɹd tɹaɪˈæŋɡjəlɚ ˈnʌmbɚ/

الفئات:

integer sequencetheoremequality