id:A063562 - OEIS Search Results

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Smallest power of 3 having just n 7's in its decimal representation.

+0
1

1, 3, 23, 11, 47, 41, 50, 100, 123, 90, 174, 112, 179, 172, 201, 233, 168, 146, 211, 280, 247, 330, 294, 369, 411, 390, 401, 451, 374, 344, 448, 468, 516, 501, 536, 559, 574, 498, 523, 577, 662, 678, 722, 618, 615, 833, 686, 782, 717, 794, 707 (list; graph; listen)

	OFFSET	`0,2`
	MATHEMATICA	`a = {}; Do[k = 1; While[ Count[ IntegerDigits[3^k], 7] != n, k++ ]; a = Append[a, k], {n, 0, 50} ]; a`
	CROSSREFS	`Sequence in context: A072113 A105433 A088605 this_sequence A130475 A122902 A124076` `Adjacent sequences: A063559 A063560 A063561 this_sequence A063563 A063564 A063565`
	KEYWORD	`base,nonn`
	AUTHOR	`Robert G. Wilson v (rgwv(AT)rgwv.com), Aug 10 2001`

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

AT&T Labs Research