Number Picking

Place 2n balls in a bag and number them 1 to 2n, then pick half of them at random. The number of different possible sums for n=1, 2, 3, ... are then 2, 5, 10, 17, 26, ... (OEIS A002522), or n^2+1

See also

Number Guessing, Real Number Picking

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Sloane, N. J. A. Sequence A002522 in "The On-Line Encyclopedia of Integer Sequences."

Referenced on Wolfram|Alpha

Number Picking

Cite this as:

Weisstein, Eric W. "Number Picking." From MathWorld--A Wolfram Web Resource.

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