How to write this matrix better?

Since this matrix has some pattern to it, must be a nicer way to write it? Thanks

[dpb]

Edit it to align it so it's clearly legible what the pattern is--too hard to keep columns straight as is, sorry...but using diag and friends may be of some help.

Answer 1

[Roger Stafford]

   k = 1e6*(diag(s(1:22),1)+diag(s(1:22),-1)+...
            diag(-[s(1:22),0]-[0,s(1:22)]));

I am assuming s is a row vector here. Make the obvious change if it is a column vector.

[Ewan]

lovely