local is selling Canon EF600/4.0L Lenses (modified)# PhotoGear - 摄影器材
w*z
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sequence defined for positive interger
n-> n/2 (n is even)
n-> 3n + 1 (n is odd)
starting from 13, we have
13, 40, 20, 10, 5, 16, 8, 4, 2, 1
which number under 1million, produces the longest chain.
n-> n/2 (n is even)
n-> 3n + 1 (n is odd)
starting from 13, we have
13, 40, 20, 10, 5, 16, 8, 4, 2, 1
which number under 1million, produces the longest chain.
