Littlewood Ultraflat
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Polynomial #635
ratio
0.9787973824
(Δ = 1.27e-13 at M = 2^16, ladder-fft/2)
degree
497
status
verified
content hash
dc9a26d008cfbcb2040f0eea740c3a9dfbd1cdf1ebb3a6eeb1fb1238fa67a091
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 7.3006771
submitted
2026-08-25T19:51:11Z
Coefficients
(canonical symmetry representative)
+++++++++++++++++++++++++++++---------------++++++++++++--------++++++------++++---++++----+++--+----++++-++-++----++-+++--++--++--++-++-+--++++----+--+++++-----+--+++---++-++---++--++--+++--+-++---+++--+-+--+++--++++--+--+--+++----++-+---+--+-++--++--++----+++-++++--+-++-++---+++--+-++--+--+++++--+--+--++++--+--++--++--+--+++--+--+--+++-+-++-+-++---+-++-+--++++---++--++--++--+---++-+--+++---+-++-+---++-++-+--+-++-++-+--+-+-++-+-+--+-+-+-++-+-+-+-+-+--+-+-+-+-+-+-+--+-+-+-+-+-+-+-+-+-+-+-+-+-+
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