id:A063633 - OEIS Search Results

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Smallest power of 9 having just n 7's in its decimal representation.

+0
1

1, 3, 14, 19, 24, 34, 25, 50, 64, 45, 87, 56, 92, 86, 112, 150, 84, 73, 142, 140, 162, 165, 147, 196, 207, 195, 211, 278, 187, 172, 224, 234, 258, 254, 268, 291, 287, 249, 342, 306, 331, 339, 361, 309, 396, 439, 343, 391, 413, 397, 533 (list; graph; listen)

	OFFSET	`0,2`
	MATHEMATICA	`a = {}; Do[k = 1; While[ Count[ IntegerDigits[9^k], 7] != n, k++ ]; a = Append[a, k], {n, 0, 50} ]; a`
	CROSSREFS	`Sequence in context: A022125 A121459 A121226 this_sequence A108933 A108420 A015639` `Adjacent sequences: A063630 A063631 A063632 this_sequence A063634 A063635 A063636`
	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