id:A063584 - OEIS Search Results

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Smallest power of 4 having just n 9's in its decimal representation.

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1

1, 6, 17, 16, 45, 56, 46, 70, 77, 86, 93, 122, 127, 173, 171, 166, 172, 214, 178, 217, 253, 300, 265, 238, 286, 266, 298, 364, 331, 343, 368, 365, 446, 447, 425, 423, 396, 483, 480, 506, 576, 575, 594, 592, 678, 579, 671, 621, 539, 664, 620 (list; graph; listen)

	OFFSET	`0,2`
	MATHEMATICA	`a = {}; Do[k = 1; While[ Count[ IntegerDigits[4^k], 9] != n, k++ ]; a = Append[a, k], {n, 0, 50} ]; a`
	CROSSREFS	`Sequence in context: A070395 A112366 A095421 this_sequence A019296 A035484 A009171` `Adjacent sequences: A063581 A063582 A063583 this_sequence A063585 A063586 A063587`
	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