About: Squared triangular number

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

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dbo:description	the sum of the first n cubes, which equals the square of the nth triangular number (en) somme des n premiers entiers élevés au cube (fr)
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dbo:wikiPageExternalLink	http://blogs.mathworks.com/loren/2010/03/04/nichomachuss-theorem/ https://web.archive.org/web/20191019215037/http:/users.tru.eastlink.ca/~brsears/math/oldprob.htm%23s32 http://users.tru.eastlink.ca/~brsears/math/oldprob.htm%23s32 http://www.numdam.org/item%3Fid=CM_1995__97_1-2_295_0 http://www.macalester.edu/~bressoud/pub/CBN3.pdf http://www.combinatorics.org/Volume_11/Abstracts/v11i1n13.html http://www.combinatorics.org/Volume_11/Abstracts/v11i1r9.html http://www.math.hmc.edu/~benjamin/papers/rectangles.pdf http://www.math.hmc.edu/~orrison/research/papers/two_quick.pdf%7C https://archive.org/details/geometricexerci00raogoog/page/n61/mode/2up https://zenodo.org/record/1432033 http://www.math.nmsu.edu/~davidp/bridge.pdf
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dbp:authorlink	Charles Wheatstone (en)
dbp:date	2019-10-19 (xsd:date)
dbp:first	Charles (en)
dbp:last	Wheatstone (en)
dbp:mode	cs2 (en)
dbp:title	Nicomachus's theorem (en)
dbp:url	https://web.archive.org/web/20191019215037/http:/users.tru.eastlink.ca/~brsears/math/oldprob.htm%23s32
dbp:urlname	NicomachussTheorem (en)
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dbp:year	1854 (xsd:integer)
dct:subject	dbc:Articles_containing_proofs dbc:Integer_sequences dbc:Number_theory dbc:Proof_without_words dbc:Algebraic_identities
rdfs:label	Squared triangular number (en) عدد مربع مثلثي (ar) Cuadrados de números triangulares (es) Somme des n premiers cubes (fr) Jumlah segitiga kuadrat (in) Teorema di Nicomaco (it) Sommatieregel (nl)
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