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A173608 a(1) = 1, for n >= 2; a(n) = the smallest number h such that tau(h) = A000005(h) = 4 * a(n-1). 8
1, 6, 360, 1102701600 (list; graph; refs; listen; history; text; internal format)
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

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Last modified July 24 20:26 EDT 2021. Contains 346273 sequences. (Running on oeis4.)