id:A054518 - OEIS Search Results

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Emirpnons (nonprimes whose reversal is a different nonprime).

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10, 12, 15, 18, 21, 24, 25, 26, 27, 28, 36, 39, 40, 42, 45, 46, 48, 49, 51, 52, 54, 56, 57, 58, 60, 62, 63, 64, 65, 68, 69, 72, 75, 78, 80, 81, 82, 84, 85, 86, 87, 90, 93, 94, 96, 100, 102, 105, 108, 114, 115, 116, 117, 120 (list; graph; listen)

	OFFSET	`0,1`
	EXAMPLE	`a(1)=12 because 12 is not a prime, neither is 21 and 12<>21`
	CROSSREFS	`Cf. A006567.` `Sequence in context: A161990 A030591 A006793 this_sequence A072198 A057485 A162825` `Adjacent sequences: A054515 A054516 A054517 this_sequence A054519 A054520 A054521`
	KEYWORD	`base,easy,nonn`
	AUTHOR	`Henry Bottomley (se16(AT)btinternet.com), Apr 07 2000`

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

AT&T Labs Research