id:A066873 - OEIS Search Results

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Number of amicable pairs where smaller term of the pair is less than 10^n.

+0
2

0, 0, 1, 5, 13, 42, 108, 236, 586, 1427, 3340, 7642, 17519, 39374 (list; graph; listen)

	OFFSET	`1,4`
	LINKS	`Shyam Sunder Gupta, Amicable Numbers` `J. O. M. Pedersen, Known Amicable Pairs` `J. O. M. Pedersen, Tables of Aliquot Cycles` `Index entries for sequences related to amicable numbers`
	EXAMPLE	`There are 13 pairs with smaller term of the pair < 10^5, so a(5) = 13.`
	CROSSREFS	`Cf. A063990.` `Sequence in context: A085601 A111009 A012172 this_sequence A105262 A129789 A093576` `Adjacent sequences: A066870 A066871 A066872 this_sequence A066874 A066875 A066876`
	KEYWORD	`nonn`
	AUTHOR	`Shyam Sunder Gupta (guptass(AT)rediffmail.com), Jan 21 2002`
	EXTENSIONS	`Edited by Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), May 31 2003`

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Last modified August 8 15:51 EDT 2008. Contains 142751 sequences.