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A159001 First part a of A159000(n). 1
33, 19, 1209, 39, 4515, 54, 628, 695, 3008 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..9.

EXAMPLE

A159000(1)=3360=phi(33)*sigma(60) so a(1)=33.

A159000(5)=451584=phi(4515)*sigma(84) so a(5)=4515.

CROSSREFS

Cf. A000010, A000203, A159000.

Sequence in context: A033353 A192631 A104781 * A304261 A022989 A023475

Adjacent sequences:  A158998 A158999 A159000 * A159002 A159003 A159004

KEYWORD

base,more,nonn

AUTHOR

Farideh Firoozbakht, Jun 07 2009

STATUS

approved

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Last modified January 20 19:22 EST 2021. Contains 340332 sequences. (Running on oeis4.)