id:A050710 - OEIS Search Results

Search: id:A050710

Displaying 1-1 of 1 results found.

page 1

Smallest composite that when added to sum of prime factors reaches a prime after n iterations.

+0
26

6, 8, 4, 32, 49, 45, 60, 125, 82, 66, 150, 129, 559, 417, 358, 378, 314, 279, 247, 183, 1152, 1102, 2265, 1929, 1658, 1524, 1414, 5708, 8047, 6033, 8430, 8020, 7852, 11805, 11715, 9388, 12622, 13471, 13146, 12562, 12512, 20830, 16869, 13492, 58832 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`E.g. n=2 gives a(2)=8 -> 8 = 2.2.2 so 8 + (2+2+2) = 14 and composite (iteration 1); 14 = 2.7 so 14 + (2+7) = 23 and already prime after the second iteration.`
	CROSSREFS	`Cf. A050703-A050709. See also A050767.` `Sequence in context: A065166 A006255 A110760 this_sequence A123092 A010501 A030644` `Adjacent sequences: A050707 A050708 A050709 this_sequence A050711 A050712 A050713`
	KEYWORD	`nonn`
	AUTHOR	`Patrick De Geest (pdg(AT)worldofnumbers.com), Aug 15 1999.`
	EXTENSIONS	`More terms from Michel ten Voorde (seqfan(AT)tenvoorde.org)`

page 1

Search completed in 0.002 seconds

Last modified December 2 11:54 EST 2009. Contains 167921 sequences.

AT&T Labs Research