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021: Square Tower hollowed out 3d printed

DIGITAL PREVIEW
Not a Photo

White Natural Versatile Plastic
021: Square Tower hollowed out 3d printed
021: Square Tower hollowed out 3d printed

DIGITAL PREVIEW
Not a Photo

021: Square Tower hollowed out

Made by
$5.00
3D printed in white nylon plastic with a matte finish and slight grainy feel.
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Product Description
This tower is made up of 1^2+2^2+3^2+4^2+5^2 + ... + n^2 cubes (well it really stops with 5, but it works for any number n). Six copies of this tower fit together into a rectangular box of dimensions n,n+1 and 2n+1. This means that

1^2+2^2+3^2+4^2+5^2 + ... + n^2= n(n+1)(2n+1)/6

is a general formula for the sum for the first n squares.

If you are rich you may want to consider printing two each of these towers in different colors. Why this is a good idea will become clear when you put together a the box.
Details
What's in the box:
021: Square Tower hollowed out
Dimensions:
2.5 x 2.5 x 2.5 cm
Switch to inches
0.98 x 0.98 x 0.98 inches
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Success Rate:
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Rating:
Mature audiences only.
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