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A174190 Triangle T(n,m) = numerator of 1/n^2-1/(n-m)^2, read by rows. 1
0, 0, -3, 0, -5, -8, 0, -7, -3, -15, 0, -9, -16, -21, -24, 0, -11, -5, -1, -2, -35, 0, -13, -24, -33, -40, -45, -48, 0, -15, -7, -39, -3, -55, -15, -63, 0, -17, -32, -5, -56, -65, -8, -77, -80, 0, -19, -9, -51, -4, -3, -21, -91, -6, -99, 0, -21, -40, -57, -72, -85, -96 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,3
COMMENTS
The triangle contains the initial values of the array described in A172370.
Ignoring details of column indexing, these are the negated values of A061035.
LINKS
EXAMPLE
The triangle starts in column n=1, rows 0<=m<n as
0;
0,-3;
0,-5,-8;
0,-7,-3,-15;
0,-9,-16,-21,-24;
CROSSREFS
Sequence in context: A052123 A285471 A258113 * A061035 A225233 A021331
KEYWORD
sign,easy,tabl
AUTHOR
Paul Curtz, Mar 11 2010
EXTENSIONS
Comments compactified with reference to A172370, formula and example added - R. J. Mathar, Nov 23 2010
STATUS
approved

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Last modified April 18 16:22 EDT 2024. Contains 371780 sequences. (Running on oeis4.)