id:A050701 - OEIS Search Results

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Largest of the pair n and n-reversed (<>n and no leading zeros) having the same number of prime factors, in sorted order.

+0
3

51, 62, 85, 93, 94, 221, 302, 321, 341, 381, 394, 413, 442, 492, 493, 502, 511, 513, 514, 522, 523, 524, 533, 534, 551, 553, 561, 562, 574, 581, 582, 604, 605, 621, 622, 623, 642, 663, 682, 685, 705, 711, 723, 734, 741, 766, 771, 781, 794, 805, 814, 817 (list; graph; listen)

	OFFSET	`0,1`
	EXAMPLE	`a(n)=341 -> a(n)-reversed=143 gives pair (143,341) of which only the largest value 341 is withheld.`
	CROSSREFS	`Cf. A050699, A050700.` `Sequence in context: A043210 A043990 A045068 this_sequence A034819 A118147 A015863` `Adjacent sequences: A050698 A050699 A050700 this_sequence A050702 A050703 A050704`
	KEYWORD	`nonn,base`
	AUTHOR	`Patrick De Geest (pdg(AT)worldofnumbers.com), Aug 15 1999.`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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