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Skip to 4th power (Posted on 2016-06-27)

1
~~2 3~~
4 5 6
~~7 8 9 10~~
11 12 13 14 15
~~16 17 18 19 20 21~~
22 23 24 25 26 27 28
etc...

Show that adding all the numbers that are not crossed off from 1 to the end of a line, the result is a 4^th power.

Example: 1+4+5+6=16=2⁴

No Solution Yet Submitted by Jer

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hint from faraway

| Comment 2 of 4 |

Try to prove by induction.

Posted by Ady TZIDON on 2016-06-27 20:09:02

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