id:A117059 - OEIS Search Results

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Palindromes for which the multiplicative digital root is a prime.

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2, 3, 5, 7, 121, 131, 151, 171, 232, 474, 535, 575, 666, 929, 999, 3993, 9339, 11211, 11311, 11511, 11711, 12321, 14741, 15351, 15751, 16661, 19291, 19991, 21312, 22722, 23632, 28782, 29392, 32623, 33233, 33933, 35753, 36363, 38383, 39193 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`575 is in the sequence because (1) it is a palindrome and (2)the multiplicative digital root is 5, which is a prime.`
	CROSSREFS	`Cf. A002113.` `Sequence in context: A046713 A119835 A076609 this_sequence A117058 A067173 A090718` `Adjacent sequences: A117056 A117057 A117058 this_sequence A117060 A117061 A117062`
	KEYWORD	`base,nonn`
	AUTHOR	`Luc Stevens (lms022(AT)yahoo.com), Apr 16 2006`

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Last modified July 26 23:19 EDT 2008. Contains 142293 sequences.

AT&T Labs Research