id:A102496 - OEIS Search Results

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Values of n for which the numbers of the form 1nn1 (sequence A100846) are primes.

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12, 13, 15, 19, 27, 31, 34, 36, 40, 42, 45, 49, 57, 58, 61, 69, 70, 72, 78, 82, 87, 90, 91, 96, 97, 1000, 1002, 1017, 1018, 1024, 1033, 1035, 1063, 1068, 1069, 1074, 1084, 1086, 1090, 1095, 1110, 1114, 1116, 1117, 1126, 1128, 1173, 1174, 1179, 1185, 1189, 1192 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`For n=12 we have 112121, which is prime.` `For n=13 we have 113131, which is prime.` `For n=1000 we have 1100010001, which is prime.`
	CROSSREFS	`Cf. A100846. The primes themselves are in sequence A102497.` `Sequence in context: A074164 A076085 A039790 this_sequence A003894 A084622 A057488` `Adjacent sequences: A102493 A102494 A102495 this_sequence A102497 A102498 A102499`
	KEYWORD	`easy,nonn`
	AUTHOR	`Mark Hudson (mrmarkhudson(AT)hotmail.com), Jan 12 2005`

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Last modified July 24 12:00 EDT 2008. Contains 142294 sequences.

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