# Transparent fraction

- 2026-08-28 [Conjecture] The common-box transparent fraction does not grow to `24.5%`: `GRID(n) = (n-1)/(4n)` for odd `n` reproduces `1/6, 2/9, 13/54, 27/110` at `n = 3, 9, 27, 55`, reads `0.2495463` at `n = 551` and `0.2499504` at `n = 5041`, and its limit is `1/4`; `24.5%` is the `n = 55` value, and at `n = 0` the normalization is undefined.