MinT - Best Known (21, 21+22, s)-Nets in Base 4

Best Known (21, 21+22, s)-Nets in Base 4

(21, 21+22, 35)-Net over F₄ — Constructive and digital

Digital (21, 43, 35)-net over F₄, using

(u,Â u+v)-construction [i] based on
1. digital (3, 14, 14)-net over F₄, using
  - net from sequence [i] based on digital (3, 13)-sequence over F₄, using
    - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₄ with g(F) = 3 and N(F) ≥ 14, using
      - an explicitly constructive algebraic function field [i]
2. digital (7, 29, 21)-net over F₄, using
  - net from sequence [i] based on digital (7, 20)-sequence over F₄, using
    - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₄ with g(F) = 7 and N(F) ≥ 21, using
      - an explicitly constructive algebraic function field [i]

(21, 21+22, 44)-Net over F₄ — Digital

Digital (21, 43, 44)-net over F₄, using

net from sequence [i] based on digital (21, 43)-sequence over F₄, using
- Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₄ with g(F) = 21 and N(F) ≥ 44, using
  - a curve from the manYPoints database [i]

(21, 21+22, 360)-Net in Base 4 — Upper bound on s

There is no (21, 43, 361)-net in base 4, because

the generalized Rao bound for nets shows that 4^mÂ â‰¥ 77 996113 381610 216380 942432 > 4⁴³ [i]