id:A062521 - OEIS Search Results

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4^a(n) is smallest nonnegative power of 4 containing the string 'n'.

+0
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5, 0, 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, 29, 9, 7, 3, 8, 23, 12, 14, 17, 23, 13, 12, 15, 15, 22 (list; graph; listen)

	OFFSET	`0,1`
	MATHEMATICA	`Table[k = 0; While[ StringPosition[ ToString[4^k], ToString[n] ] == {}, k++ ]; k, {n, 0, 75} ]`
	CROSSREFS	`Cf. A030000. Essentially the same as A063567.` `Sequence in context: A021956 A139341 A092173 this_sequence A099645 A137520 A010676` `Adjacent sequences: A062518 A062519 A062520 this_sequence A062522 A062523 A062524`
	KEYWORD	`base,nonn`
	AUTHOR	`Robert G. Wilson v (rgwv(AT)rgwv.com), Jun 24 2001`

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Last modified December 2 15:58 EST 2008. Contains 150992 sequences.

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