The merit factor of long low autocorrelation binary sequences

The asymptotic "merit factor," i.e, the ratio of central to sidelobe energy of extremely long, optimally Iow autocorrelation sequences, formerly calculated as 2e^{2}=14.778 \cdots with the use of an ergodicity hypothesis and a convenient, but faulty, approximation, is recalculated without that approximation and is established at 12.32 \cdots .