A triangular sequence of coefficients of Dynkin diagram weights for the Cartan Groups B_n: t(n,m)=m*(2*n - m + 1)/2. As a rectangle, the accumulation array of A051340.
1, 2, 3, 3, 5, 6, 4, 7, 9, 10, 5, 9, 12, 14, 15, 6, 11, 15, 18, 20, 21, 7, 13, 18, 22, 25, 27
1 seqfan posts
Tue Nov 22 03:04:49 CET 2011 [seqfan] Sequence (a triangle) related to A141419, not in OEIS?