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Every natural number is the sum of (at most) forty-nine palindromes
- jonsen 6y agoThanks for “(at most)”. But for a moment I thought that a number can not be the sum of more than 49 :-) The theorem in the paper has an unfortunate wording, I think. Wikipedia on “additive basis” makes it clear: “In additive number theory, an additive basis is a set S of natural numbers with the property that, for some finite number k, every natural number can be expressed as a sum of k or fewer elements of S.”