Linear OA(4⁷⁰, 1389, F₄, 16) (dual of [1389, 1319, 17]-code), using 1318 step VarÅ¡amov–Edel lengthening with (r_i) = (4, 3, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 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, 6 times 0, 1, 6 times 0, 1, 7 times 0, 1, 8 times 0, 1, 9 times 0, 1, 10 times 0, 1, 12 times 0, 1, 12 times 0, 1, 14 times 0, 1, 16 times 0, 1, 17 times 0, 1, 19 times 0, 1, 21 times 0, 1, 23 times 0, 1, 26 times 0, 1, 29 times 0, 1, 31 times 0, 1, 35 times 0, 1, 38 times 0, 1, 42 times 0, 1, 46 times 0, 1, 51 times 0, 1, 57 times 0, 1, 62 times 0, 1, 68 times 0, 1, 75 times 0, 1, 82 times 0, 1, 90 times 0, 1, 99 times 0, 1, 110 times 0, 1, 120 times 0) based on linear OA(4¹⁶, 17, F₄, 16) (dual of [17, 1, 17]-code or 17-arc in PG(15,4)), using

• dual of repetition code with length 17 [i]