Littlewood Ultraflat
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Polynomial #589
ratio
0.9801832502
(Δ = 9.15e-13 at M = 2^18, ladder-fft/2)
degree
451
status
verified
content hash
6420ece95852b4f81670e23c9a076a815e11ee648f26f62074b862e85d02c1a6
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 7.3458939
submitted
2026-08-25T19:50:50Z
Coefficients
(canonical symmetry representative)
+++++++++++++++++++++++++++--------------+++++++++++--------++++----++++----+++--+++-+--+++----+++++--++--+++--+-+++--+-+--+++-++---++-++--++----+--+++---++-++--+--++--++-++--+----++++-++-----++--+--+--+-+++--+-----++++-+--+-+-----++++-+--+-+---++-++++---+++--++-+-++---+-++-+---++---++--++---++---++-++-++---+-++--++---++-++---+--+++++--+----++-++--++--+-+--+-++-++-+--+--++-++-+--+-++-+--+-++-+-+-+--+-+-+-+-+--+-+-+-+-+-+-++-+-+-+-+-+-+-+-+-+-+-+-+-
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