function ab=sr_abel_dahlquist(dig,N)
%SR_ABEL Recurrence coefficients for Abel-Dahlquist polynomials.
%   AB=SR_ABEL_DAHLQUIST(DIG,N) generates in DIG-digit arrithmetic 
%   the Nx2 array AB of the first N recurrence coefficients 
%   for Abel-Dahlquist polynomials orthogonal on [-Inf,Inf] with 
%   respect to the weight function w(x)=x/(2*sinh(pi*x)).

digits(dig);
ab=vpa(zeros(N,2));
k=2:N; c=[vpa(1/4) vpa((k-1).*k/4)]; 
ab(:,2)=c';
