id:A063430 - OEIS Search Results

Search: id:A063430

Displaying 1-1 of 1 results found.

page 1

Smallest power of 2 having just n 4's in its decimal representation.

+0
1

1, 2, 18, 22, 64, 91, 117, 111, 164, 138, 182, 233, 219, 253, 343, 266, 264, 321, 315, 331, 450, 349, 451, 469, 553, 504, 510, 687, 592, 630, 710, 744, 808, 767, 828, 889, 722, 951, 789, 942, 918, 964, 1066, 1033, 890, 1183, 1263, 1171, 1229, 1130, 1291 (list; graph; listen)

	OFFSET	`0,2`
	MATHEMATICA	`a = {}; Do[k = 1; While[ Count[ IntegerDigits[2^k], 4] != n, k++ ]; a = Append[a, k], {n, 0, 50} ]; a`
	CROSSREFS	`Sequence in context: A022371 A092587 A015787 this_sequence A031104 A115042 A098561` `Adjacent sequences: A063427 A063428 A063429 this_sequence A063431 A063432 A063433`
	KEYWORD	`base,nonn`
	AUTHOR	`Robert G. Wilson v (rgwv(AT)rgwv.com), Aug 10 2001`

page 1

Search completed in 0.002 seconds

Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

AT&T Labs Research