id:A074954 - OEIS Search Results

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Least perfect power b^e such that b^e-n is also a perfect power, or 0 if no such perfect power exists.

+0
4

9, 27, 4, 8, 9, 0, 8, 9, 25, 2197, 27, 16, 49, 0, 16, 25, 25, 27, 27, 36, 25, 49, 27, 25, 125, 27, 36, 32, 225, 6889, 32, 36, 49, 0, 36, 100, 64, 1369, 64, 49, 49, 0, 484, 125, 49, 289, 128, 49, 81, 0, 100, 196, 729, 81, 64, 64, 121, 0, 900, 64, 125, 0, 64, 100, 81, 0, 1156 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`a(A074981) = 0.`
	LINKS	`Eric Weisstein's World of Mathematics, Perfect Power.`
	EXAMPLE	`a(30) = 6889: 30 = 83^2 - 19^3.`
	CROSSREFS	`Cf. A001597.` `Sequence in context: A056409 A056399 A135864 this_sequence A103952 A103955 A109041` `Adjacent sequences: A074951 A074952 A074953 this_sequence A074955 A074956 A074957`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)lhsystems.com), Oct 10 2002`

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

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