Add 1 to 48 you get...
48 + 1 = 49 = 7 * 7 = 7^2 (a square)
and if you add 1 to its half, you also get a square number
24 + 1 = 25 = 5 * 5 = 5^2
Could you find other numbers sharing this property?
In other words, find x such that x + 1 and (x / 2) + 1 are squares
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