If first 17 positive integers are rearranged into a sequence such that sum of any two adjacent is a perfect square...

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First 17 positive integers (1..17) are rearranged into a sequence such that the sum of any two adjacent terms is a perfect square.
What is the sum of the first and last terms of this sequence?

posted May 31, 2018

16- 9- 7- 2- 14- 11- 5- 4- 12- 13- 3- 6- 10- 15- 1- 8- 17
25- 16- 9- 16- 25- 16- 9- 16- 25- 16- 9- 16- 25- 9- 25
16+17=33

answer Nov 9, 2019

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