id:A063587 - OEIS Search Results

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Smallest power of 5 having just n 2's in its decimal representation.

+0
1

1, 2, 11, 13, 28, 25, 46, 53, 64, 66, 85, 100, 97, 115, 116, 148, 145, 107, 139, 184, 175, 209, 199, 274, 276, 251, 232, 244, 342, 250, 329, 339, 312, 375, 354, 332, 394, 351, 419, 362, 453, 415, 484, 517, 509, 468, 550, 541, 496, 522, 504 (list; graph; listen)

	OFFSET	`0,2`
	MATHEMATICA	`a = {}; Do[k = 1; While[ Count[ IntegerDigits[5^k], 2] != n, k++ ]; a = Append[a, k], {n, 0, 50} ]; a`
	CROSSREFS	`Adjacent sequences: A063584 A063585 A063586 this_sequence A063588 A063589 A063590` `Sequence in context: A022115 A042453 A041885 this_sequence A038972 A105887 A019407`
	KEYWORD	`base,nonn`
	AUTHOR	`Robert G. Wilson v (rgwv(AT)rgwv.com), Aug 10 2001`

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Last modified October 13 20:18 EDT 2008. Contains 145016 sequences.

AT&T Labs Research