Best Known (9, s)-Sequences in Base 5
(9, 25)-Sequence over F5 — Constructive and digital
Digital (9, 25)-sequence over F5, using
- Niederreiter–Xing sequence construction II/III [i] based on function field F/F5 with g(F) = 9 and N(F) ≥ 26, using
(9, 47)-Sequence in Base 5 — Upper bound on s
There is no (9, 48)-sequence in base 5, because
- net from sequence [i] would yield (9, m, 49)-net in base 5 for arbitrarily large m, but
- m-reduction [i] would yield (9, 95, 49)-net in base 5, but
- extracting embedded OOA [i] would yield OOA(595, 49, S5, 2, 86), but
- the (dual) Plotkin bound for OOAs shows that M ≥ 239 813715 187187 588845 165483 845967 013820 654756 273142 993450 164794 921875 / 87 > 595 [i]
- extracting embedded OOA [i] would yield OOA(595, 49, S5, 2, 86), but
- m-reduction [i] would yield (9, 95, 49)-net in base 5, but