id:A063567 - OEIS Search Results

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4^a(n) = smallest positive power of 4 having n in its decimal representation.

+0
2

5, 2, 4, 7, 1, 4, 2, 10, 7, 6, 5, 20, 25, 35, 9, 29, 2, 17, 15, 11, 28, 9, 36, 29, 5, 4, 9, 19, 24, 16, 11, 37, 38, 43, 35, 14, 8, 15, 7, 21, 6, 11, 16, 11, 9, 14, 21, 18, 10, 16, 26, 20, 30, 8, 14, 8, 4, 10, 25, 22, 22 (list; graph; listen)

	OFFSET	`0,1`
	MATHEMATICA	`a = {}; Do[k = 1; While[ StringPosition[ ToString[4^k], ToString[n] ] == {}, k++ ]; a = Append[a, k], {n, 0, 50} ]; a`
	CROSSREFS	`Essentially the same as A062521.` `Sequence in context: A112597 A006666 A029683 this_sequence A072223 A124907 A020800` `Adjacent sequences: A063564 A063565 A063566 this_sequence A063568 A063569 A063570`
	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.

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