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A119932
Triangle of denominators of the cube of a certain lower triangular matrix.
5
1, 8, 8, 108, 108, 27, 576, 576, 576, 64, 18000, 18000, 18000, 2000, 125, 21600, 21600, 21600, 21600, 5400, 216, 1234800, 1234800, 1234800, 1234800, 308700, 12348, 343, 5644800, 5644800, 5644800, 5644800
OFFSET
1,2
COMMENTS
The triangle of the corresponding numerators is A119935.
See a comment under A119935 on the relation to the triangle A027447.
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
a(i, j)=1/A002024(i, j), i>=1, j<=i.
Row sums give A119933. Row sums of the triangle of rationals are identical 1.
Sequence in context: A286068 A228071 A192386 * A270118 A270150 A065241
KEYWORD
nonn,easy,tabl,frac
AUTHOR
Wolfdieter Lang, Jul 20 2006
STATUS
approved