A159001 - OEIS

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A159001

First part a of A159000(n).

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`

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