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A036912
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Indices of the left-to-right maxima in A057635.
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6
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1, 2, 4, 6, 8, 12, 16, 20, 24, 32, 36, 40, 48, 64, 72, 80, 96, 120, 128, 144, 160, 176, 192, 224, 240, 288, 320, 336, 384, 432, 480, 576, 672, 720, 768, 864, 960, 1056, 1152, 1280, 1296, 1344, 1440, 1536, 1680, 1728, 1920, 2112, 2208, 2304, 2400, 2592, 2688
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| A number m belongs to this sequence iff A057635(k) < A057635(m) for all k<m.
Indices of records in A057635(n), the maximal m with phi(m)=n.
The Alekseyev link in A131883 establishes the following explicit relationship between A131883, A036912 and A057635. Namely, for t belonging to A036912, we have t=A131883(A057635(t)-1). In other words, A036912(n) = A131883(A057635(A036912(n))-1) for all n.
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LINKS
| T. D. Noe, Table of n, a(n) for n = 1..5000
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FORMULA
| a(n) = A000010(A036913(n)). - Max Alekseyev, Nov 07 2007
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CROSSREFS
| Cf. A057635, A000010, A006511, A036913, A132154, A131883.
Sequence in context: A050622 A082662 A064522 * A097921 A185976 A117146
Adjacent sequences: A036909 A036910 A036911 * A036913 A036914 A036915
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KEYWORD
| nonn
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AUTHOR
| David W. Wilson (davidwwilson(AT)comcast.net)
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EXTENSIONS
| More precise definition from Max Alekseyev, Nov 07 2007
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