id:A067468 - OEIS Search Results

Search: id:A067468

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Numbers n such that 7 is the first digit of 7^n.

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1, 20, 33, 46, 59, 72, 104, 117, 130, 143, 175, 188, 201, 214, 246, 259, 272, 285, 317, 330, 343, 356, 388, 401, 414, 427, 459, 472, 485, 498, 511, 530, 543, 556, 569, 582, 614, 627, 640, 653, 685, 698, 711, 724, 756, 769, 782, 795, 827, 840, 853, 866, 898 (list; graph; listen)

	OFFSET	`1,2`
	PROGRAM	`(PARI) : for(n=1, 1000, if(floor(7^n/10^(floor(n*log(7)/log(10))))==7, print1(n, ", ")))`
	CROSSREFS	`Cf. A067485.` `Sequence in context: A119873 A075230 A165236 this_sequence A127906 A108667 A108669` `Adjacent sequences: A067465 A067466 A067467 this_sequence A067469 A067470 A067471`
	KEYWORD	`nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Feb 22 2002`

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Last modified November 25 08:46 EST 2009. Contains 167481 sequences.

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