1,1

Table of n, a(n) for n=1..38.

Makoto Kamada, Factorizations of 99...997.

A105080(n) = A105068(4n) = A105069(2n). - Robert G. Wilson v, Apr 08 2005

The number of distinct prime divisors of 10000^1 - 3 is 2, so the first term is 2.

Cf. A089675, A105068, A105069.

Sequence in context: A179651 A139560 A192095 * A336299 A206424 A117728

Adjacent sequences: A105077 A105078 A105079 * A105081 A105082 A105083

nonn

Parthasarathy Nambi, Apr 06 2005

More terms from Robert G. Wilson v, Apr 08 2005

approved