OFFSET
1,2
FORMULA
T(n,1) = n^2.
T(n,n) = n*phi(n) = A002618(n).
EXAMPLE
First few rows of the triangle are:
1;
4, 2;
9, 0, 6;
16, 12, 0, 8;
25, 0, 0, 0, 20;
36, 18, 24, 0, 0, 12;
49, 0, 0, 0, 0, 0, 42;
64, 56, 0, 48, 0, 0, 0, 32;
81, 0, 72, 0, 0, 0, 0, 0, 54;
...
MAPLE
A127470 := proc(n, k)
end proc: # R. J. Mathar, Sep 08 2013
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Gary W. Adamson, Jan 15 2007
EXTENSIONS
Terms corrected by R. J. Mathar, Sep 08 2013
STATUS
approved