id:A061365 - OEIS Search Results

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Numbers n such that either n or its reversal (but not both) is prime.

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14, 16, 19, 20, 23, 29, 30, 32, 34, 35, 38, 41, 43, 47, 50, 53, 59, 61, 67, 70, 74, 76, 83, 89, 91, 92, 95, 98, 103, 104, 106, 109, 110, 112, 118, 119, 124, 125, 127, 128, 130, 133, 134, 136, 137, 139, 140, 142, 145, 146, 152, 160, 163, 164, 166 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`14=2*7 is a term as 41 is prime but 14 is not; 13 is not a term as its reversal is also a prime.`
	MATHEMATICA	`Select[ Range[169], Xor[ PrimeQ[ # ], PrimeQ[ FromDigits[ Reverse[ IntegerDigits[ # ]]]]] & ]`
	CROSSREFS	`Sequence in context: A053425 A034305 A091898 this_sequence A102107 A007935 A076055` `Adjacent sequences: A061362 A061363 A061364 this_sequence A061366 A061367 A061368`
	KEYWORD	`nonn,base`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)lhsystems.com), May 21 2002`

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

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