id:A109431 - OEIS Search Results

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Binary strings that have 1's where 'evil numbers' occur, 0's elsewhere and every term ends with the n-th evil number indice (counting with 0 = first).

+0
2

1, 1001, 100101, 1001011, 1001011001, 10010110011, 1001011001101, 1001011001101001, 100101100110100101, 1001011001101001011, 100101100110100101101, 100101100110100101101001 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`a(431) is an anti-yarborough prime with 861 digits (certified). Are there any more?`
	EXAMPLE	`a(4)=1001011 because it has 1's at the 'evil number' indices 0, 3, 5 and 6.`
	CROSSREFS	`Cf. A001969, A109432.` `Sequence in context: A100709 A130600 A114387 this_sequence A140927 A097659 A143906` `Adjacent sequences: A109428 A109429 A109430 this_sequence A109432 A109433 A109434`
	KEYWORD	`base,easy,nonn`
	AUTHOR	`Jason Earls (zevi_35711(AT)yahoo.com), Jun 28 2005`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research