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.
Number of 1s in the Binary Representation of a Number
Back to basics 15 - Benchmark
Justify the character string in center with proportional fonts
mathematics , probability problem
Easy Sequences 34: Modified Pascal's Triangle
Easy Sequences 15: Pythagorean Area with maximum Hypotenuse
Easy Sequences 27: Product of Radicals of Integers
Easy Sequences 22: Sum of Proper Fractions
Easy Sequences 39: Perfect Squares in Pascal's Triangle
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