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A123594
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Unique sequence of 0's and 1's which are either repeated or not repeated with the following property: when the sequence is 'coded' in writing down a 1 when an element is repeated and a 0 when it is not repeated and by putting the initial element in front of the sequence thus obtained, the above sequence appears.
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2
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1, 1, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0, 1, 1, 0, 0, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 0, 1, 1, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0, 1, 1, 0, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0, 1, 1, 0, 0, 1, 0, 0, 1, 1, 0, 1, 0
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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LINKS
| Vantieghem Emmanuel (manuvti(AT)hotmail.com), Nov 14 2006, Table of n, a(n) for n = 1..620
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MATHEMATICA
| a = {1, 1, 0}; i = 2; Label[be]; i += 1; t = Part[a, i]; If[t == 0, b = {a, 1 - Part[a, Length[a]]}; a := Flatten[b], b = {a, Part[a, Length[a]]}; a := Flatten[b]; b = {a, 1 - Part[a, Length[a]]}; a := Flatten[b]]; If[i > 1000, Print[a], Goto[be]]
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CROSSREFS
| Sequence in context: A167753 A086747 A141727 * A145006 A080813 A100672
Adjacent sequences: A123591 A123592 A123593 * A123595 A123596 A123597
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KEYWORD
| easy,nonn
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AUTHOR
| Vantieghem Emmanuel (manuvti(AT)hotmail.com), Nov 14 2006
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