Bilangan segitiga kuadrat: Perbedaan antara revisi

 

== Referensi ==

*{{citation|last1=Benjamin|first1=Arthur T.|author1-link=Arthur T. Benjamin|last2=Orrison|first2=M. E.|title=Two quick combinatorial proofs of <math>\textstyle \sum k^3 = {n+1\choose 2}^2</math>|journal=[[College Mathematics Journal]]|year=2002|volume=33|issue=5|pages=406–408|url=http://www.math.hmc.edu/~orrison/research/papers/two_quick.pdf|doi=10.2307/1559017|jstor=1559017}}.

*{{citation|doi=10.2307/27646391|title=Summing cubes by counting rectangles|url=http://www.math.hmc.edu/~benjamin/papers/rectangles.pdf|pages=387–389|issue=5|volume=37|year=2006|journal=[[College Mathematics Journal]]|first3=Calyssa|last1=Benjamin|last3=Wurtz|author2-link=Jennifer Quinn|first2=Jennifer J.|last2=Quinn|author1-link=Arthur T. Benjamin|first1=Arthur T.|jstor=27646391}}.