id:A050773 - OEIS Search Results

Search: id:A050773

Displaying 1-1 of 1 results found.

page 1

Iterated procedure 'composite k added to sum of its prime factors reaches a prime' yields 6 skipped primes.

+0
1

4, 22, 54, 93, 111, 145, 155, 185, 221, 231, 377, 450, 667, 688, 992, 1122, 1161, 1428, 1638, 1995, 2144, 2220, 2624, 2820, 2838, 3627, 3774, 3876, 4225, 4761, 5106, 5434, 5590, 5676, 5850, 6188, 6216, 6405, 6734, 8364, 8554, 9196, 9471, 9558, 10660 (list; graph; listen)

	OFFSET	`0,1`
	EXAMPLE	`a(2)=22 + (2+11) = 35 + (5+7) = ending prime 47. Between 22 and 47 one finds 6 primes 23, 29, 31, 37, 41 and 43.`
	CROSSREFS	`Cf. A050703, A050710.` `Sequence in context: A031108 A020173 A022603 this_sequence A122241 A076525 A089761` `Adjacent sequences: A050770 A050771 A050772 this_sequence A050774 A050775 A050776`
	KEYWORD	`nonn`
	AUTHOR	`Patrick De Geest (pdg(AT)worldofnumbers.com), Sep 15 1999.`

page 1

Search completed in 0.002 seconds

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

AT&T Labs Research