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Search: id:A164859
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| A164859 |
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a(1)=1. a(n) = the smallest positive integer that, when written in binary, contains both binary a(n-1) and binary n as (possibly overlapping) substrings. |
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+0
1
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OFFSET
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1,2
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EXAMPLE
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a(6) = 44, which is 101100 in binary. a(7) therefore contains both 101100 and the binary representation of 7, which is 111, as substrings when a(7) is written in binary. So, a(7) = 236, which is 11101100 in binary. (Both substrings share a single digit of 1.)
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CROSSREFS
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A056744
Sequence in context: A080497 A127724 A056744 this_sequence A152873 A083001 A119862
Adjacent sequences: A164856 A164857 A164858 this_sequence A164860 A164861 A164862
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KEYWORD
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base,more,nonn
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AUTHOR
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Leroy Quet (q1qq2qqq3qqqq(AT)yahoo.com), Aug 28 2009
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