

A228653


Numbers n such that if an urn contains n balls, with distinct positive numbers for each of c colors, for some c > 1 there exists a combination of c colors such that it is equally probable for c balls randomly selected from the urn to all be either the same color or distinct colors.


4



4, 8, 9, 11, 12, 16, 25, 29, 36, 46, 48, 49, 55, 57, 64, 66, 81, 88, 89, 97, 99, 100, 120, 121, 144, 145, 147, 156, 162, 164, 165, 166, 169, 176, 196, 217, 225
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