id:A048128 - OEIS Search Results

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Becomes prime or 4 after exactly 6 iterations of f(x) = sum of prime factors of x.

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134, 177, 213, 262, 309, 334, 339, 398, 445, 469, 505, 514, 534, 606, 670, 723, 742, 753, 758, 763, 788, 793, 802, 804, 817, 818, 849, 865, 913, 914, 915, 926, 961, 976, 998, 1011, 1016, 1038, 1052, 1060, 1090, 1098, 1101, 1115, 1143, 1154, 1165, 1195 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`f(x) = sum of prime factors with multiplicity, so that f(1500) = 2+2+3+5+5+5 = 22.`
	CROSSREFS	`Sequence in context: A015264 A055579 A061491 this_sequence A047824 A020353 A050963` `Adjacent sequences: A048125 A048126 A048127 this_sequence A048129 A048130 A048131`
	KEYWORD	`nonn`
	AUTHOR	`David W. Wilson (davidwwilson(AT)comcast.net)`

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Last modified July 19 08:04 EDT 2008. Contains 142098 sequences.

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