id:A073601 - OEIS Search Results

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Least k>1 such that n^k and n have equal leading decimal digits.

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2

2, 8, 18, 6, 24, 10, 20, 11, 22, 2, 2, 2, 2, 2, 6, 5, 5, 4, 4, 8, 20, 4, 4, 9, 6, 8, 8, 3, 3, 18, 48, 3, 3, 3, 12, 10, 8, 6, 6, 6, 6, 9, 20, 15, 4, 4, 4, 20, 14, 24, 18, 8, 19, 16, 5, 5, 34, 18, 10, 10, 15, 25, 6, 6, 17, 12, 7, 7, 26, 20, 21, 8, 23, 24, 9, 18, 10, 29 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`A073600(n) = n^a(n);` `A000030(n^a(n)) = A000030(n).`
	EXAMPLE	`a(4)=6, as 4^6=4096=A073600(4) is the least power of 4 with initial digit =4: 4^2=16, 4^3=64, 4^4=256, and 4^5=1024.`
	CROSSREFS	`Cf. A051248.` `Sequence in context: A066564 A034972 A061150 this_sequence A051248 A063664 A094147` `Adjacent sequences: A073598 A073599 A073600 this_sequence A073602 A073603 A073604`
	KEYWORD	`nonn,base`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)lhsystems.com), Aug 04 2002`

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

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