MinT - Best Known (7, 7+18, s)-Nets in Base 4

Best Known (7, 7+18, s)-Nets in Base 4

(7, 7+18, 21)-Net over F₄ — Constructive and digital

Digital (7, 25, 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]

(7, 7+18, 58)-Net in Base 4 — Upper bound on s

There is no (7, 25, 59)-net in base 4, because

the generalized Rao bound for nets shows that 4^mÂ â‰¥ 1240 376659 658038 > 4²⁵ [i]