id:A103181 - OEIS Search Results

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In decimal representation of n: replace all even digits by 0 and all odd digits by 1.

+0
1

0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 10, 11, 10, 11, 10, 11, 10, 11, 10, 11, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 10, 11, 10, 11, 10, 11, 10, 11, 10, 11, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 10, 11, 10, 11, 10, 11, 10, 11, 10, 11, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 10, 11, 10, 11, 10, 11, 10, 11, 10, 11, 0, 1, 0, 1, 0, 1 (list; graph; listen)

	OFFSET	`0,11`
	FORMULA	`n=Sum(d(k)10^k: 0<=d(k)<10) -> a(n)=Sum((d(k) mod 2)10^k).`
	EXAMPLE	`199->'111': a(199)=111; 200->'000': a(200)=0;` `299->'011': a(299)=11; 300->'100': a(300)=100.`
	CROSSREFS	`Cf. A000035.` `Adjacent sequences: A103178 A103179 A103180 this_sequence A103182 A103183 A103184` `Sequence in context: A004451 A004499 A020509 this_sequence A100813 A085209 A085217`
	KEYWORD	`nonn,base`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Mar 18 2005`

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Last modified October 13 20:18 EDT 2008. Contains 145016 sequences.

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