MinT - Best Known (18, 64, s)-Nets in Base 4

Best Known (18, 64, s)-Nets in Base 4

(18, 64, 33)-Net over F₄ — Constructive and digital

Digital (18, 64, 33)-net over F₄, using

t-expansion [i] based on digital (15, 64, 33)-net over F₄, using
- net from sequence [i] based on digital (15, 32)-sequence over F₄, using
  - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₄ with g(F) = 15 and N(F) ≥ 33, using
    - an explicitly constructive algebraic function field [i]

(18, 64, 41)-Net over F₄ — Digital

Digital (18, 64, 41)-net over F₄, using

net from sequence [i] based on digital (18, 40)-sequence over F₄, using
- Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₄ with g(F) = 18 and N(F) ≥ 41, using
  - Drinfeld modules of rank 1 [i]

(18, 64, 96)-Net in Base 4 — Upper bound on s

There is no (18, 64, 97)-net in base 4, because

extracting embedded orthogonal array [i] would yield OA(4⁶⁴, 97, S₄, 46), but
- the linear programming bound shows that MÂ â‰¥ 17 551672 443269 830978 915105 133499 110631 230918 120257 846151 906745 909248 / 44694 499640 915429 319268 220967 > 4⁶⁴ [i]