id:A063115 - OEIS Search Results

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Smallest power of 2 having just n 1's in its decimal representation.

+0
1

1, 4, 17, 34, 57, 77, 70, 114, 127, 122, 207, 195, 202, 168, 319, 345, 329, 283, 410, 431, 463, 313, 467, 541, 485, 507, 610, 634, 563, 669, 576, 826, 655, 720, 784, 907, 894, 887, 766, 927, 945, 1029, 933, 994, 1134, 1102, 1171, 1205, 1351, 1309, 1128 (list; graph; listen)

	OFFSET	`0,2`
	MATHEMATICA	`a = {}; Do[k = 1; While[ Count[ IntegerDigits[2^k], 1] != n, k++ ]; a = Append[a, k], {n, 0, 50} ]; a`
	CROSSREFS	`Sequence in context: A061387 A127547 A031040 this_sequence A009954 A031092 A120884` `Adjacent sequences: A063112 A063113 A063114 this_sequence A063116 A063117 A063118`
	KEYWORD	`base,nonn`
	AUTHOR	`Robert G. Wilson v (rgwv(AT)rgwv.com), Aug 10 2001`

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.

AT&T Labs Research