id:A050702 - OEIS Search Results

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Numbers n such that n and n-reversed (<>n and no leading zeros) have the same number of prime factors and these prime factors (palindromes allowed here) are also reversals of each other.

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26, 39, 62, 93, 143, 169, 187, 226, 286, 339, 341, 622, 682, 781, 933, 961, 1177, 1243, 1313, 1469, 1573, 1717, 2042, 2062, 2066, 2206, 2402, 2426, 2446, 2462, 2486, 2602, 2626, 2642, 3063, 3093, 3099, 3131, 3309, 3421, 3603, 3639, 3669, 3693, 3737, 3751, 3903, 3939, 3963, 4084 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`Reversing 339=3.113 gives 933=3.311, both with two prime factors.`
	CROSSREFS	`Cf. A050699.` `Sequence in context: A039324 A043147 A043927 this_sequence A105997 A075288 A125218` `Adjacent sequences: A050699 A050700 A050701 this_sequence A050703 A050704 A050705`
	KEYWORD	`nonn,base,nice`
	AUTHOR	`Patrick De Geest (pdg(AT)worldofnumbers.com), Aug 15 1999.`
	EXTENSIONS	`More terms from Naohiro Nomoto (6284968128(AT)geocities.co.jp), Apr 03 2001`

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Last modified September 7 15:23 EDT 2008. Contains 143483 sequences.

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