OFFSET
1,2
COMMENTS
m=1 column: A058397(n).
FORMULA
a(n, m)= sum(A026820(n, k), k=m..n).
EXAMPLE
1; 3,2; 6,5,3; 13,12,9,5; ...
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Wolfdieter Lang, Dec 11 2000
STATUS
approved