%I #8 Apr 21 2012 15:41:18
%S 1,2,1,3,2,1,5,4,3,1,7,6,5,3,1,11,10,9,7,4,1,15,14,13,11,8,4,1,22,21,
%T 20,18,15,10,5,1,30,29,28,26,23,18,12,5,1,42,41,40,38,35,30,23,14,6,1,
%U 56,55,54,52,49,44,37,27,16,6,1,77,76,75,73,70,65,58,47,34,19,7,1,101
%N Triangle of partial row sums of partition triangle A058398.
%C Mirror of A026820. - _Omar E. Pol_, Apr 21 2012
%F a(n, m) = sum(A058398(n, k), k=m..n).
%e Triangle begins:
%e 1;
%e 2, 1;
%e 3, 2, 1;
%e 5, 4, 3, 1;
%e 7, 6, 5, 3, 1;
%e 11, 10, 9, 7, 4, 1;
%e 15, 14, 13, 11, 8, 4, 1;
%Y Columns 1-3: A000041(n), A000065(n), A007042(n+1).
%Y Cf. A008284.
%K nonn,tabl
%O 1,2
%A _Wolfdieter Lang_, Dec 11 2000