Littlewood Ultraflat
Polynomials
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Polynomial #611
ratio
0.9808467508
(Δ = 7.93e-11 at M = 2^15, ladder-fft/2)
degree
473
status
verified
content hash
acb661135e4ae9ac277db5fc5a74fe0788ce07a08c46ba4b385f2bc6cf4bd5de
submitter
David Renshaw
note
Best-known LABS sequence from Psenicnik, Mlinaric, Brest, and Boskovic, Dual-Step Optimization for Binary Sequences with High Merit Factors (2025), arXiv:2409.07222; merit factor 7.4273058
submitted
2026-08-25T19:51:00Z
Coefficients
(canonical symmetry representative)
+++++++++++++++++++++++++++++---------------+++++++++++---------++++++----+-++++-++++---++-++-----++++--++-++---+++--+-++++---++-++---+++--+--+++----+--+++++----++--+--+-+++--+---++---+++--++----++-++--++++----++-++-++---+++--+--++--++-++---++--++---++-++-++---+++--+-++-+--++---++-+--++--+--+--++-+++--+----+++--++-+--+-+--+++-+--+--+++--+--+--+++--+--+-++++--+--+--+++--++-+--+-+--+++--+--+-+++-+----+-++-+-+--+-+-+-+--+-+-+-+-+--+-+-+-+-+-+-+--+-+-+-+-+-+-+-+-+-+-+-+-+-+
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