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46
2000 Guts #46: Sum equals an integer
2000 Guts #46: Sum equals an integer
Source:
October 25, 2014
Problem Statement
For what integer values of
n
n
n
is
1
+
n
+
n
2
2
+
⋯
+
n
n
n
!
1+n+\frac{n^2}{2}+\cdots +\frac{n^n}{n!}
1
+
n
+
2
n
2
+
⋯
+
n
!
n
n
an integer?
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