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A328318
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Number of nonzero digits in representation of A328316(n) in primorial base; Number of distinct prime factors in A328316(1+n).
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5
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0, 1, 1, 2, 1, 2, 1, 3, 5, 16, 104, 7447
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history;
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internal format)
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OFFSET
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0,4
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LINKS
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FORMULA
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PROG
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(PARI)
A276086(n) = { my(m=1, p=2); while(n, m *= (p^(n%p)); n = n\p; p = nextprime(1+p)); (m); };
A267263(n) = { my(s=0, p=2, d); while(n, d = (n%p); s += !!d; n = (n-d)/p; p = nextprime(1+p)); (s); };
\\ Or alternatively, more slowly as:
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CROSSREFS
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KEYWORD
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nonn,base,hard,more
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AUTHOR
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STATUS
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approved
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