id:A089330 - OEIS Search Results

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a(1) = 1, a(n) = smallest multiple of n such that the concatenation (n>1) a(n)a(n-1)... a(2) a(1) is a prime.

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1, 4, 6, 8, 30, 6, 91, 8, 54, 10, 11, 12, 481, 294, 60, 80, 34, 612, 342, 200, 462, 1606, 644, 1392, 1425, 1924, 216, 560, 3219, 120, 4123, 11904, 1254, 170, 3780, 468, 2442, 1672, 936, 11880, 861, 2352, 1935, 7524, 3825, 16238, 2256, 9120, 6909, 8950, 1122 (list; graph; listen)

	OFFSET	`1,2`
	EXAMPLE	`41,641,8641,308641, etc. are primes.`
	CROSSREFS	`Sequence in context: A126233 A059889 A058011 this_sequence A108270 A019161 A137026` `Adjacent sequences: A089327 A089328 A089329 this_sequence A089331 A089332 A089333`
	KEYWORD	`base,nonn`
	AUTHOR	`Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Nov 04 2003`
	EXTENSIONS	`More terms from David Wasserman (wasserma(AT)spawar.navy.mil), Sep 13 2005`

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Last modified July 23 17:35 EDT 2008. Contains 142285 sequences.

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