A173607 a(1) = 1, for n >= 2; a(n) = the smallest number h such that tau(h) = A000005(h) = 3 * a(n-1).

1, 4, 60, 277200

Offset: 1

Author

Jaroslav Krizek, Nov 06 2010

Keywords

• nonn

Comments

The next term is too large to include.

Crossrefs

Cf. A014221, A173603, A173604, A173605, A173606, A173608, A173609, A171959, A173011.

Formula

A000005(a(n)) = 3 * a(n-1) for n >= 2.