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COMMENT
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Using the terminology of A008932, call a set A a basis of order h if every
number can be written as the sum of h (not necesarily distinct) elements of
A. Call a basis an increasing basis of order h if its elements are arranged
in increasing order, a0<a1<a2<...
Consider the set of all initial subsequences of any length {a0, a1, a2, ..., an}
of all the increasing bases. These can be ordered in lexicographic order,
giving, for h = 3:
0
0,1
0,1,2
0,1,3
0,1,4
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