If anyone is interested, I have a list of the Ulam(1,2) numbers <= 5,000,000 and I expect to have one for <= 10,000,000 tomorrow.  If you want me to send you a copy, let me know.  The former is over 3MB, storing the numbers in an ASCII text file.  It is 900KB zipped, or 1.5MB stored as 32-bit (binary) integers.