It is not hard to write a program to produce the sequence up to a number of digit, but small basic will not handle numbers with more than 30 digits. The solution is to separate the number, as it grows, into sub-numbers, each one of them with less than 30 digits.
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You can see it working, along with the code, here
http://smallbasic.com/smallbasic.com/program/?jdw047
Natham Aguire
naguirr1@binghamton.edu