We easily see the pattern of the odd-numbered terms,
start with 64 and take half each time:
64, __, 32, __, 16, __, 8, __, 4, __, 2, __
Then we notice that the term on the left of 32 is 3
more than 32, and the term on the right of 32 is 3 less
than 32,
64, 35, 32, 29, 16, __, 8, __, 4, __, 2, __
So the one just before 8 is 3 more than 8, or 11, and the
term on the right of 8 is 3 less than 8, or 5. And the
pattern goes like this:
64, 35, 32, 29, 16, 11, 8, 5, 4, 5, 2, -1
Edwin
