A173606 a(1) = 1, for n >= 2; a(n) = the smallest number h such that tau(h) = A000005(h) = 2 * a(n-1).

1, 2, 6, 60, 55440

Offset

1,2

Comments

The next term is too large to include.

Links

Table of n, a(n) for n=1..5.

Formula

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

Crossrefs

Cf. A014221, A173603, A173604, A173605, A173607, A173608, A173609, A171959, A173011.

Sequence in context: A077175 A139771 A129665 * A134706 A145756 A030170

Adjacent sequences: A173603 A173604 A173605 * A173607 A173608 A173609

Keyword

nonn

Author

Jaroslav Krizek, Nov 06 2010

Status

approved