

A173607


a(1) = 1, for n >= 2; a(n) = the smallest number h such that tau(h) = A000005(h) = 3 * a(n1).


8




OFFSET

1,2


COMMENTS

The next term is too large to include.


LINKS

Table of n, a(n) for n=1..4.


FORMULA

A000005(a(n)) = 3 * a(n1) for n >= 2.


CROSSREFS

Cf. A014221, A173603, A173604, A173605, A173606, A173608, A173609, A171959, A173011.
Sequence in context: A132627 A229771 A136385 * A071582 A158300 A129452
Adjacent sequences: A173604 A173605 A173606 * A173608 A173609 A173610


KEYWORD

nonn


AUTHOR

Jaroslav Krizek, Nov 06 2010


STATUS

approved



