1,2

D. E. Knuth, TAOCP, Vol. 3, Section 5.3.1.

Table of n, a(n) for n=1..8.

A117627 is a lower bound for any comparison-based sorting algorithm.

Sequence in context: A301940 A058121 A117627 * A288971 A288970 A037564

Adjacent sequences: A117625 A117626 A117627 * A117629 A117630 A117631

nonn

N. J. A. Sloane, Oct 06 2006

approved