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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
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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
*
A338162
A215182
A214906
Adjacent sequences:
A105076
A105077
A105078
*
A105080
A105081
A105082
KEYWORD
nonn
AUTHOR
Parthasarathy Nambi
, Apr 06 2005
STATUS
approved
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Last modified April 25 03:15 EDT 2024. Contains 371964 sequences. (Running on oeis4.)