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1990 All Soviet Union Mathematical Olympiad
531
ASU 531 All Soviet Union MO 1990 3^{2n+1} - 2^{2n+1} - 6^n composite
ASU 531 All Soviet Union MO 1990 3^{2n+1} - 2^{2n+1} - 6^n composite
Source:
August 14, 2019
number theory
Composite
Problem Statement
For which positive integers
n
n
n
is
3
2
n
+
1
−
2
2
n
+
1
−
6
n
3^{2n+1} - 2^{2n+1} - 6^n
3
2
n
+
1
−
2
2
n
+
1
−
6
n
composite?
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