id:A063578 - OEIS Search Results

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Smallest power of 4 having just n 3's in its decimal representation.

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1, 7, 26, 43, 38, 57, 48, 64, 81, 92, 91, 78, 104, 151, 155, 143, 162, 150, 173, 249, 267, 251, 339, 282, 333, 325, 275, 378, 345, 428, 415, 429, 473, 463, 411, 430, 513, 420, 507, 546, 508, 489, 533, 603, 566, 593, 641, 545, 707, 638, 722 (list; graph; listen)

	OFFSET	`0,2`
	MATHEMATICA	`a = {}; Do[k = 1; While[ Count[ IntegerDigits[4^k], 3] != n, k++ ]; a = Append[a, k], {n, 0, 50} ]; a`
	CROSSREFS	`Sequence in context: A103267 A125972 A063153 this_sequence A063159 A059376 A049453` `Adjacent sequences: A063575 A063576 A063577 this_sequence A063579 A063580 A063581`
	KEYWORD	`base,nonn`
	AUTHOR	`Robert G. Wilson v (rgwv(AT)rgwv.com), Aug 10 2001`

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Last modified August 28 19:25 EDT 2008. Contains 143183 sequences.

AT&T Labs Research