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 A105080 Number of distinct prime divisors of 10000^n - 3. 1
 2, 2, 2, 4, 4, 2, 3, 4, 4, 5, 4, 5, 4, 4, 4, 4, 5, 3, 5, 4, 5, 3, 4, 8, 4, 3, 6, 5, 5, 3, 7, 5, 3, 5, 1, 4, 6, 5 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Makoto Kamada, Factorizations of 99...997. FORMULA A105080(n) = A105068(4n) = A105069(2n). - Robert G. Wilson v, Apr 08 2005 EXAMPLE The number of distinct prime divisors of 10000^1 - 3 is 2, so the first term is 2. CROSSREFS Cf. A089675, A105068, A105069. Sequence in context: A179651 A139560 A192095 * A336299 A206424 A117728 Adjacent sequences:  A105077 A105078 A105079 * A105081 A105082 A105083 KEYWORD nonn AUTHOR Parthasarathy Nambi, Apr 06 2005 EXTENSIONS More terms from Robert G. Wilson v, Apr 08 2005 STATUS approved

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Last modified July 24 23:25 EDT 2021. Contains 346273 sequences. (Running on oeis4.)