Additive Squares

Word of length 330 over {0, 3, 8, 13}

by Aayush Rajasekaran, 2026-08-26 · the current record for this alphabet · JSON

0100200300-500 position in word → partial sum

Display: drawn for the equivalent alphabet translated by -6 (drift removed).

13 3 8 3 13 3 8 0 3 13 3 8 13 8 0 13 0 3 0 8 0 3 0 13 3 0 3 8 13 8 0 3 0 13 0 8 13 3 13 8 13 0 8 3 13 3 8 3 0 3 8 3 13 8 13 0 8 3 8 0 13 0 3 8 3 0 3 13 3 0 3 8 0 13 0 8 0 3 0 8 13 0 13 3 0 13 0 8 3 8 13 0 13 8 3 13 3 0 3 8 3 0 3 13 0 3 0 8 13 8 3 8 0 13 0 3 13 0 13 8 13 0 13 3 13 8 3 8 0 3 8 3 13 8 3 8 0 13 8 13 3 13 8 13 0 13 8 3 0 3 13 0 13 8 13 0 13 3 0 13 0 8 0 3 8 3 13 0 13 3 13 8 13 3 13 0 3 8 3 0 3 13 3 0 8 13 0 8 0 3 0 8 0 13 0 3 13 0 13 8 3 8 0 13 0 3 13 0 13 8 13 0 13 3 13 8 3 13 3 0 13 8 13 0 13 3 0 3 8 3 0 13 0 3 0 8 3 8 13 3 8 3 0 3 13 3 0 3 8 0 3 0 13 0 3 0 8 0 13 8 0 8 3 13 8 13 0 8 0 3 0 13 3 0 3 8 3 0 3 13 3 8 13 3 13 0 13 8 13 0 13 3 0 13 0 8 0 3 0 8 0 13 8 0 3 13 3 8 13 3 0 8 13 0 8 0 3 0 8 0 13 0 3 13 0 13 8 0 3 0

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Alphabet {0, 3, 8, 13}

size 4 · diameter 13 · record length 330 · JSON

open No exhaustive search has settled this alphabet; the record is a lower bound on the (possibly infinite) maximum.

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