Additive Squares

Word of length 370 over {0, 4, 7, 13}

by Aayush Rajasekaran, 2026-08-20 · JSON

This is a historical record from 2026-08-20, superseded on 2026-08-26 by length 371 — jump to the current record (371).

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

4 7 0 4 7 13 0 13 4 0 4 7 0 13 0 7 4 7 13 7 0 13 4 0 7 0 13 7 13 4 13 7 13 0 13 4 7 4 13 4 0 7 0 4 13 0 7 13 7 4 7 0 4 7 4 13 4 0 4 7 0 4 0 13 0 7 0 4 7 13 7 0 13 7 13 4 7 4 0 4 7 13 4 13 0 4 0 7 0 13 0 4 13 0 13 7 13 4 7 13 7 0 13 0 4 7 0 7 13 7 4 7 13 7 0 13 7 13 4 13 7 13 0 13 4 0 13 0 7 13 4 13 7 13 0 7 0 4 7 13 0 4 13 0 13 7 0 4 0 7 0 13 7 4 0 4 7 4 13 4 7 0 13 0 4 13 0 13 7 13 4 13 7 13 0 7 13 7 4 0 4 13 0 4 0 7 13 0 7 4 7 13 4 7 4 0 4 13 4 0 4 7 0 4 0 13 0 4 0 7 0 13 7 4 13 0 7 13 7 4 7 13 7 0 7 4 0 13 4 0 7 4 7 13 4 7 4 0 4 13 4 0 4 7 0 4 0 13 0 4 0 7 0 13 7 0 7 4 0 4 13 4 0 4 7 0 4 13 0 7 4 7 0 7 13 4 13 7 13 0 7 4 0 4 13 0 13 7 0 4 0 7 0 13 0 7 4 0 4 13 0 13 7 13 4 13 7 13 0 7 13 7 4 0 13 0 4 0 7 4 7 13 4 7 4 0 4 13 4 0 4 7 0 4 13 0 13 7 0 7 4 0 13 0 4 7 4 0 4 13 7 13 0 13 4 7 0 7 13 0 7 4 0 4 13 0 7 13 0 13

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Alphabet {0, 4, 7, 13}

size 4 · diameter 13 · record length 371 · JSON

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

Know the exact maximum? Log in to claim this alphabet closed.

Record history

• 371 (was 370) — Aayush Rajasekaran, 2026-08-26
• 370 (first) — Aayush Rajasekaran, 2026-08-20

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