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Even Digit Perfect Square(s) (Posted on 2008-10-25) Difficulty: 3 of 5
Determine all possible 7-digit decimal (base 10) perfect square(s), each of whose digits is nonzero and even.

Note: While a solution is trivial with the aid of a computer program, show how to derive it without one.

See The Solution Submitted by K Sengupta    
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Solution SLOANE A103705 | Comment 1 of 10

    nice trio:   2862864, 8282884, 8868484,

a subset of A103705 

 

   corrected:A103751

Edited on October 26, 2008, 4:24 am
  Posted by Ady TZIDON on 2008-10-25 13:48:23

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