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A177710 Values of n where A046801(n) produces a record. 0
1, 2, 4, 6, 8, 12, 18, 20, 24, 36, 48, 60, 72, 84, 108, 120, 144, 168, 180, 288, 300, 360, 420 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..23.

EXAMPLE

240 doesn't qualify because 2^180-1 has 6291456 divisors but 2^240-1 has only 4718592 divisors.

CROSSREFS

Sequence in context: A081954 A096903 A222603 * A032458 A079212 A141452

Adjacent sequences:  A177707 A177708 A177709 * A177711 A177712 A177713

KEYWORD

hard,nonn

AUTHOR

J. Lowell, May 11 2010

EXTENSIONS

Corrected and extended by Alois P. Heinz, Sep 13 2011

STATUS

approved

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Last modified June 19 10:58 EDT 2013. Contains 226404 sequences.