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A173606 a(1) = 1, for n >= 2; a(n) = the smallest number h such that tau(h) = A000005(h) = 2 * a(n-1). 8
1, 2, 6, 60, 55440 (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..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

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