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The SPA numbers (Posted on 2019-08-04) Difficulty: 3 of 5
Let m be an integer . Let us say that m is a SPA number if there are positive whole numbers k and j such that

m = (mk + mj) / 2.

Find all SPA numbers.

No Solution Yet Submitted by Danish Ahmed Khan    
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Comments: ( Back to comment list | You must be logged in to post comments.)
Some Thoughts re: more cases | Comment 3 of 5 |
(In reply to more cases by Steven Lord)

Your 4) is wrong.
The correct ״list of all SPA numbers” 
is: all integers.
Please see my modified post.

Edited on August 4, 2019, 4:19 pm
  Posted by Ady TZIDON on 2019-08-04 16:09:40

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