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A061545
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Minimal XR-sequences of A048200(n).
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0
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OFFSET
| 1,2
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COMMENTS
| a(5) = 1 since "xrrxrrxrxr" is the shortest only sequence reversing "ABCDE".
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EXAMPLE
| For n = 6 there are 2 possibilities: A048200(6) = 15. -> Two minimal XR-sequences with length 15 exist. -> "xrxrrxrxrrxrrrx" "rxrrxrxrrxrxrrx"; so a(6) = 2.
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CROSSREFS
| Cf. A048200.
Sequence in context: A025177 A026148 A117211 * A126886 A179272 A165680
Adjacent sequences: A061542 A061543 A061544 * A061546 A061547 A061548
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KEYWORD
| more,nonn
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AUTHOR
| Naohiro Nomoto (6284968128(AT)geocities.co.jp), May 16 2001
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