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Oblonggetallen

Hallo,
Wat zijn oblonggetallen precies?
Groetjes

Marlous de Bruijne
24-9-2007

Antwoord

Metkrijg je bijvoorbeeld:

The Oblong numbers are those that can be arranged in a rectangle one unit wider than it is high; each is twice a Triangular number. The Oblongs have sides in the ratios 1:2, 2:3, 3:4, 4:5, 5:6,....

Zie B Figurate Numbers [http://www.mathgym.com.au/history/pythagoras/pythnum.htm#7]

WvR
24-9-2007