A173608 a(1) = 1, for n >= 2; a(n) = the smallest number h such that tau(h) = A000005(h) = 4 * a(n-1).

1, 6, 360, 1102701600

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)) = 4 * a(n-1) for n >= 2.

Crossrefs

Cf. A014221, A173603, A173604, A173605, A173606, A173607, A173609, A171959, A173011.

Sequence in context: A064350 A069945 A086205 * A042759 A188954 A332136

Adjacent sequences: A173605 A173606 A173607 * A173609 A173610 A173611

Keyword

nonn

Author

Jaroslav Krizek, Nov 06 2010

Status

approved