id:A063589 - OEIS Search Results

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Smallest power of 5 having just n 4's in its decimal representation.

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1, 11, 20, 12, 33, 41, 58, 87, 45, 76, 91, 106, 114, 136, 156, 150, 115, 140, 198, 190, 218, 189, 241, 231, 283, 254, 243, 311, 249, 275, 347, 345, 353, 294, 460, 361, 372, 496, 420, 431, 499, 424, 484, 546, 428, 449, 483, 558, 613, 540, 622 (list; graph; listen)

	OFFSET	`0,2`
	MATHEMATICA	`a = {}; Do[k = 1; While[ Count[ IntegerDigits[5^k], 4] != n, k++ ]; a = Append[a, k], {n, 0, 50} ]; a`
	CROSSREFS	`Sequence in context: A129908 A129909 A003284 this_sequence A102815 A105957 A105958` `Adjacent sequences: A063586 A063587 A063588 this_sequence A063590 A063591 A063592`
	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