id:A109843 - OEIS Search Results

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Least multiple of n with digit reversal a prime, or 0 if no such multiple exists.

+0
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2, 2, 3, 16, 5, 0, 7, 16, 0, 20, 11, 0, 13, 14, 0, 16, 17, 0, 38, 20, 0, 110, 92, 0, 50, 104, 0, 112, 145, 30, 31, 32, 0, 34, 35, 0, 37, 38, 0, 160, 164, 0, 172, 1100, 0, 92, 188, 0, 98, 50, 0, 104, 106, 0, 110, 112, 0, 754, 118, 0, 305, 124, 0, 128, 130, 0, 134, 136, 0, 70, 71, 0 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`a(3k) = 0, k > 0.` `A subsidiary sequence could be obtained by replacing a(3n) by the least multiple of n which on division by largest power of 3 that divides it gives a number whose digit reversal is prime.` `Note also that a(77) = 0. - Joshua Zucker (joshua.zucker(AT)stanfordalumni.org), May 04 2006`
	CROSSREFS	`Sequence in context: A073828 A153938 A060790 this_sequence A164022 A089751 A137909` `Adjacent sequences: A109840 A109841 A109842 this_sequence A109844 A109845 A109846`
	KEYWORD	`base,easy,nonn`
	AUTHOR	`Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Jul 06 2005`
	EXTENSIONS	`More terms from Joshua Zucker (joshua.zucker(AT)stanfordalumni.org), May 04 2006`

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

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