The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
This is a fairly optimal sequence for reverse-sorting an ascending list where N = 64. Requires 4.125*N comparisons. 4.125 is approximately equal to 2.28*log_10(64). The operation performed requires a defined, substantial and certainly nontrivial amount of work which is repeatable for a list of any size.
