id:A048886 - OEIS Search Results

Search: id:A048886

Displaying 1-1 of 1 results found.

page 1

Numbers n such that sigma(n) = n-th composite number.

+0
1

6, 8, 10, 14, 27, 39, 51, 57, 745, 755, 7091, 268243, 439681, 3271489, 33559819, 74138989, 80194627, 179405777, 1131818923, 1170569879, 1324475807, 1324478657 (list; graph; listen)

	OFFSET	`1,1`
	CROSSREFS	`Cf. A002808, A000203.` `Sequence in context: A030513 A065858 A073582 this_sequence A085412 A120152 A067246` `Adjacent sequences: A048883 A048884 A048885 this_sequence A048887 A048888 A048889`
	KEYWORD	`more,nonn`
	AUTHOR	`Naohiro Nomoto (6284968128(AT)geocities.co.jp)`
	EXTENSIONS	`a(15)-a(22) from Donovan Johnson (donovan.johnson(AT)yahoo.com), Apr 03 2008`

page 1

Search completed in 0.002 seconds

Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.

AT&T Labs Research