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A161766 a(1)=1. For n >=2, a(n) = the smallest positive integer with exactly sum{k=1 to n-1} a(k) divisors. 0
1, 1, 2, 6, 48, 805306368 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Next term is 2^402653212 * 3 -- too big for display. [From Hagen von Eitzen, Jun 22 2009]

LINKS

Table of n, a(n) for n=1..6.

CROSSREFS

Sequence in context: A245283 A126023 A088679 * A074020 A080310 A103990

Adjacent sequences:  A161763 A161764 A161765 * A161767 A161768 A161769

KEYWORD

nonn

AUTHOR

Leroy Quet, Jun 18 2009

STATUS

approved

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Last modified March 18 16:00 EDT 2019. Contains 321292 sequences. (Running on oeis4.)