(50g) OEIS A137580: Number of Different Digits in N!

09232017, 12:16 PM
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(50g) OEIS A137580: Number of Different Digits in N!
For natural number N input the programme returns the number of different digits in N!.
For info see https://oeis.org/A137580 You may note that for N > 41 the programme returns 10  this result is based on a heuristic proof of that fact. The proof is what I would call a 21st century proof &, while not satisfying those still entrenched in the 20th century, is more than adequate for moderns. However, as moderns see everything open to revision, should a counterproof appear I would amend the programme. Code: :: 

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