Linear OA(7⁶⁶, 357, F₇, 25) (dual of [357, 291, 26]-code), using 290 step VarÅ¡amov–Edel lengthening with (r_i) = (5, 2, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 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, 5 times 0, 1, 6 times 0, 1, 7 times 0, 1, 7 times 0, 1, 8 times 0, 1, 9 times 0, 1, 10 times 0, 1, 11 times 0, 1, 12 times 0, 1, 13 times 0, 1, 15 times 0, 1, 16 times 0, 1, 17 times 0, 1, 19 times 0, 1, 21 times 0, 1, 23 times 0, 1, 25 times 0) based on linear OA(7²⁵, 26, F₇, 25) (dual of [26, 1, 26]-code or 26-arc in PG(24,7)), using

• dual of repetition code with length 26 [i]