Hmmm. It's a very clever problem, but I am getting different answers!
I am as well. For example, for n = 100, I get 4 (out of 7) bits set.
Chris -- Yes, exactly.
Let me check. Thanks.
Should be 'triple summations', sorry for that.
What are the odds?
Differential equations I
Getting the indices from a vector
Given a window, how many subsets of a vector sum positive
Without the French accent please!
Easy Sequences 9: Faithful Pairs
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