id:A048968 - OEIS Search Results

Search: id:A048968

Displaying 1-1 of 1 results found.

page 1

Numbers n such that sigma(n) / d(n) is prime.

+0
3

3, 5, 6, 13, 20, 37, 45, 49, 61, 73, 150, 157, 169, 193, 277, 313, 361, 397, 421, 457, 541, 613, 661, 673, 733, 757, 832, 877, 961, 997, 1093, 1153, 1201, 1213, 1237, 1321, 1381, 1445, 1453, 1621, 1657, 1734, 1753, 1849, 1873, 1933, 1993, 2017, 2137, 2341 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`Union of A005383 and A048969.`
	LINKS	`T. D. Noe, Table of n, a(n) for n=1..1000`
	CROSSREFS	`Cf. A000203, A000005, A048969.` `Adjacent sequences: A048965 A048966 A048967 this_sequence A048969 A048970 A048971` `Sequence in context: A139013 A108337 A064519 this_sequence A092862 A112863 A030052`
	KEYWORD	`nice,nonn`
	AUTHOR	`G. L. Honaker, Jr. (honak3r(AT)bvunet.net)`
	EXTENSIONS	`More terms from Jud McCranie (j.mccranie(AT)comcast.net).`

page 1

Search completed in 0.002 seconds

Last modified October 15 09:18 EDT 2008. Contains 145015 sequences.

AT&T Labs Research