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'Cycling Squares' printed from http://nrich.maths.org/

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In the circle of numbers below each adjoining pair adds to make a square number:


circle of numbers from top going clockwise: 14, 2, 7, 9, 16, 20, 29, 35.

For example,

$14 + 2 = 16, 2 + 7 = 9, 7 + 9 = 16$

and so on.

Can you make a similar - but larger - cycle of pairs that each add to make a square number, using all the numbers in the box below, once and once only?

Numbers given: 2, 3, 4, 5, 6, 8, 10, 11, 12, 13, 14, 15, 7, 19, 21, 28, 30, 34
 
You might like to use this interactivity.

 
 
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