Linear OA(3²⁰⁶, 2579, F₃, 40) (dual of [2579, 2373, 41]-code), using 369 step VarÅ¡amov–Edel lengthening with (r_i) = (4, 2, 1, 1, 1, 0, 1, 0, 0, 1, 0, 0, 0, 1, 5 times 0, 1, 7 times 0, 1, 10 times 0, 1, 13 times 0, 1, 17 times 0, 1, 22 times 0, 1, 28 times 0, 1, 34 times 0, 1, 42 times 0, 1, 49 times 0, 1, 56 times 0, 1, 61 times 0) based on linear OA(3¹⁸³, 2187, F₃, 40) (dual of [2187, 2004, 41]-code), using

• an extension C_e(39) of the primitive narrow-sense BCH-code C(I) with length 2186 = 3⁷−1, defining interval I = [1,39], and designed minimum distance d ≥ |I|+1 = 40 [i]