I was doing a search on Schubert polynomials and found this.
Nantel Bergeron and Frank Sottile,Schubert polynomials, the Bruhat order and the geometry of Schubert varieties,1998, Table 1: http://www.math.tamu.edu/~sottile/pages/coeff/index.html
Table of n, a(n) for n=1..5.
( taken from the table on the web page)
Sequence in context: A111904 A015784 A302182 * A219770 A246176 A009413
Adjacent sequences: A129720 A129721 A129722 * A129724 A129725 A129726
Roger L. Bagula, Jun 08 2007