OFFSET
1,2
COMMENTS
LINKS
FORMULA
a(i,j)= denominator(r(i,j)) with r(i,j):=(A^3)[i,j], where the lower triangular matrix A has elements a[i,j] = 1/i if j<=i, 0 if j>i.
CROSSREFS
KEYWORD
AUTHOR
Wolfdieter Lang, Jul 20 2006
STATUS
approved