Alphabet {0, 1, 3, 7}
open No exhaustive search has settled this alphabet; the record below is a lower bound on the (possibly infinite) maximum.
Record word (length 106, by David Renshaw, 2026-08-18)
Display: drawn for the equivalent alphabet translated by -3 (drift removed).
1 3 0 3 7 3 1 7 3 7 0 3 0 1 3 0 7 0 3 0 1 3 1 7 0 7 3 0 7 1 3 0 7 3 7 1 7 3 7 0 7 1 0 7 0 3 0 7 0 1 0 3 1 3 7 0 7 1 7 3 7 1 7 0 1 0 3 1 3 7 1 0 3 0 1 0 7 0 1 3 0 1 7 1 0 1 3 1 0 7 3 7 1 3 1 0 7 3 0 3 1 0 3 7 1 7
History
- 106 (first) — David Renshaw, 2026-08-18