id:A046448 - OEIS Search Results

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Concatenation of distinct prime factors of composite n is a palindrome.

+0
4

1, 39, 69, 119, 129, 159, 219, 249, 259, 329, 339, 403, 429, 469, 669, 679, 795, 1207, 1309, 1329, 1533, 1547, 1589, 1703, 2319, 2321, 2359, 2649, 2701, 3039, 3421, 3503, 3629, 3633, 3639, 3729, 3899, 4303, 4607, 4839, 5289, 5295, 5565, 5603, 5739, 6209 (list; graph; listen)

	OFFSET	`0,2`
	EXAMPLE	`E.g. 429 = 3 * 11 * 13 -> 31113 is palindromic.`
	CROSSREFS	`Cf. A046447, A046449, A046450, A071223.` `Sequence in context: A090876 A165461 A020166 this_sequence A039467 A044105 A044486` `Adjacent sequences: A046445 A046446 A046447 this_sequence A046449 A046450 A046451`
	KEYWORD	`nonn,base`
	AUTHOR	`Patrick De Geest (pdg(AT)worldofnumbers.com), Jul 15 1998.`

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Last modified December 16 17:18 EST 2009. Contains 170825 sequences.

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