OFFSET
1,5
COMMENTS
EXAMPLE
The triangle starts in row n=1 with columns 0<=m<n as
-1;
-1,0,
-1,-3,3,
-1,-8,0,8,
-1,-15,-5,5,15,
-1,-24,-3,0,3,24,
-1,-35,-21,-7,7,21,35,
-1,-48,-2,-16,0,16,2,48,
-1,-63,-45,-1,-9,9,1,45,63,
MAPLE
A173651 := proc(n, m) if m = 0 then -1 ; else 1/(n-m)^2-1/m^2 ; numer(%) ; end if; end proc:
CROSSREFS
KEYWORD
AUTHOR
Paul Curtz, Nov 24 2010
STATUS
approved