Linear OA(7⁵⁷, 365, F₇, 21) (dual of [365, 308, 22]-code), using 307 step VarÅ¡amov–Edel lengthening with (r_i) = (4, 2, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 4 times 0, 1, 4 times 0, 1, 5 times 0, 1, 6 times 0, 1, 6 times 0, 1, 7 times 0, 1, 8 times 0, 1, 10 times 0, 1, 10 times 0, 1, 12 times 0, 1, 13 times 0, 1, 14 times 0, 1, 17 times 0, 1, 18 times 0, 1, 20 times 0, 1, 23 times 0, 1, 25 times 0, 1, 28 times 0, 1, 31 times 0) based on linear OA(7²¹, 22, F₇, 21) (dual of [22, 1, 22]-code or 22-arc in PG(20,7)), using

• dual of repetition code with length 22 [i]