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A105079 Number of distinct prime divisors of 1000^n - 3 where n = 1,2,3,.... 0
1, 2, 3, 2, 4, 4, 2, 2, 4, 3, 3, 4, 5, 5, 5, 5, 5, 2, 2, 4, 3, 3, 6, 3, 6, 4, 3, 5, 6, 6, 5, 8, 5, 6, 3, 6, 4, 6, 2, 3, 5, 8, 3, 3, 2, 4, 5, 4, 5, 3, 6, 6, 5, 7, 4, 7, 4, 4, 2, 8 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..60.

EXAMPLE

If n=1, then 1000^n - 3 = 1000^1 - 3 = 997 which is a prime, so the first term is 1.

CROSSREFS

Cf. A105069, A105068.

Sequence in context: A134834 A035583 A145178 * A215182 A214906 A274228

Adjacent sequences:  A105076 A105077 A105078 * A105080 A105081 A105082

KEYWORD

nonn

AUTHOR

Parthasarathy Nambi, Apr 06 2005

STATUS

approved

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Last modified July 22 23:04 EDT 2017. Contains 289676 sequences.