id:A063615 - OEIS Search Results

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Exponent of smallest power of 7 having just n 9's in its decimal representation.

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1, 2, 13, 18, 22, 28, 43, 46, 71, 66, 83, 104, 86, 128, 127, 125, 139, 142, 124, 190, 195, 185, 202, 216, 215, 265, 235, 245, 244, 263, 278, 282, 274, 277, 286, 310, 320, 323, 432, 348, 376, 448, 400, 392, 459, 446, 441, 413, 587, 456, 486 (list; graph; listen)

	OFFSET	`0,2`
	MATHEMATICA	`a = {}; Do[k = 1; While[ Count[ IntegerDigits[7^k], 9] != n, k++ ]; a = Append[a, k], {n, 0, 50} ]; a`
	CROSSREFS	`Sequence in context: A109181 A067522 A128852 this_sequence A020585 A038943 A154812` `Adjacent sequences: A063612 A063613 A063614 this_sequence A063616 A063617 A063618`
	KEYWORD	`base,nonn`
	AUTHOR	`Robert G. Wilson v (rgwv(AT)rgwv.com), Aug 10 2001`

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Last modified December 4 23:11 EST 2009. Contains 170347 sequences.

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