Linear OA(7⁴⁶, 426, F₇, 16) (dual of [426, 380, 17]-code), using 379 step VarÅ¡amov–Edel lengthening with (r_i) = (3, 2, 1, 1, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 0, 1, 4 times 0, 1, 4 times 0, 1, 5 times 0, 1, 6 times 0, 1, 8 times 0, 1, 9 times 0, 1, 10 times 0, 1, 12 times 0, 1, 14 times 0, 1, 16 times 0, 1, 18 times 0, 1, 21 times 0, 1, 25 times 0, 1, 28 times 0, 1, 33 times 0, 1, 37 times 0, 1, 43 times 0, 1, 49 times 0) based on linear OA(7¹⁶, 17, F₇, 16) (dual of [17, 1, 17]-code or 17-arc in PG(15,7)), using

• dual of repetition code with length 17 [i]