%I A115579
%S A115579 1,1,1,1,1,1,1,1,1,1,1,1,2,1,1,2,1,1,2,1,1,2,1,1,2,1,1,2,1,1,2,1,1,2,1,
%T A115579 1,2,1,1,2,1,1,2,1,1,2,1,1,2,1,1,2,1,1,2,1,1,2,2,1,1,3,3,1,1,3,3,1,1,3,
%U A115579 3,1,1,3,3,1,1,3,3,1,1,3,3,1,1,3,3,1,1,3,3,1,1,2,2,1,1,3,3
%N A115579 Array read by rows: row n (>= 1) gives the Betti numbers for the n-th 
               element of the affine Weyl group of type A4_tilde (in Goresky's standard 
               ordering).
%C A115579 There are infinitely many rows.
%H A115579 Mark Goresky, <a href="http://www.math.ias.edu/~goresky/tables.html">
               Tables of Kazhdan-Lusztig polynomials</a>
%e A115579 Array begins:
%e A115579 1
%e A115579 1 1
%e A115579 1 1
%e A115579 1 1
%e A115579 1 1
%e A115579 1 1
%e A115579 1 2 1
%e A115579 1 2 1
%e A115579 1 2 1
%Y A115579 Cf. A115570-A115583.
%Y A115579 Sequence in context: A087204 A131534 A061347 this_sequence A115573 A152851 
               A152849
%Y A115579 Adjacent sequences: A115576 A115577 A115578 this_sequence A115580 A115581 
               A115582
%K A115579 nonn,tabf
%O A115579 1,13
%A A115579 Roger L. Bagula, Mar 04 2006