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A109431 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). 1
1, 1001, 100101, 1001011, 1001011001, 10010110011, 1001011001101, 1001011001101001, 100101100110100101, 1001011001101001011, 100101100110100101101, 100101100110100101101001 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

COMMENTS

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: A114387 A204965 A192776 * A140927 A097659 A143906

Adjacent sequences:  A109428 A109429 A109430 * A109432 A109433 A109434

KEYWORD

base,easy,nonn

AUTHOR

Jason Earls (zevi_35711(AT)yahoo.com), Jun 28 2005

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Last modified February 15 02:35 EST 2012. Contains 205689 sequences.