1,2

Lusztig's piecewise-linear function is of interest because it appears to be related to a description of the canonical basis of the quantized enveloping algebra U^+(sl_{n+1}).

J. W. Cockerton, "Canonical bases and piecewise-linear combinatorics", Ph.D., Warwick, 1995

Table of n, a(n) for n=1..5.

Sequence in context: A156296 A003046 A137884 * A152804 A188490 A213457

Adjacent sequences:  A057562 A057563 A057564 * A057566 A057567 A057568

hard,nonn,nice

Richard M. Green, Oct 04 2000

approved