Under OEIS A046760, an Extravagant number has less digits than the number of digits in its prime factorization including exponents. First 6 Extravagant numbers are 4, 6, 8, 9, 12, 18. Though it doesn't matter which base we use, here we adopt only a base of 10.
the number of first
a vector of length
n containing first entries from the sequence.
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