Special Matrices

Matrix Reference Manual includes a short description about special matrices and their properties. Absolutely useful. I was looking for a matrix with the following form:

A = [ 1 0 ...   0

      1 1 0 ... 0

      0 1 1 ... 0

      :

      0 ...   1 1

      0 ...   0 1]

Referring to special matrices page, I found out that A can be a Toeplitz matrix for which a_ij = a0 where i=j; otherwise a_(i+1)(j+1) = a_ij, (i.e. a_ij only depends on i-j).