Returns the Moler matrix
A = makematrix_moler ( n )
a 1-by-1 matrix of doubles, integer value, the size of the matrix to return
a n-by-n matrix of doubles, integer values
Returns the Moler matrix of size n Positive definite, one small eigenvalue.
If i==j, then
A(i,j) = i
else
A(i,j) = min(i,j)-2
J.C. Nash, Compact Numerical Methods for Computers: Linear Algebra and Function Minimisation, second edition, Adam Hilger, Bristol, 1990 (Appendix 1).