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Search: id:A132083
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| A132083 |
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a(n) = n-th positive integer which is coprime to (2^n +1). Also, a(n) = final term of row n in triangle A132082. |
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+0
2
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| 1, 2, 4, 4, 7, 7, 10, 8, 13, 12, 16, 12, 19, 17, 25, 16, 25, 23, 28, 21, 31, 27, 34, 24, 40, 32, 43, 29, 43, 42, 46, 32, 49, 42, 59, 38, 55, 47, 58, 40, 61, 59, 64, 46, 79, 57, 70, 48, 74, 63, 76, 55, 79, 73, 91, 56, 85, 72, 88, 63, 91, 77, 103, 64, 106, 88, 100, 72, 103, 93, 106
(list; graph; listen)
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OFFSET
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1,2
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MATHEMATICA
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a = {1}; Do[i = 1; c = 0; While[c < n, If[GCD[i, 2^n + 1] == 1, c++ ]; i++ ]; AppendTo[a, i - 1], {n, 2, 80}]; a - Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), Dec 26 2007
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CROSSREFS
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Cf. A132082, A131880.
Sequence in context: A130805 A023831 A023844 this_sequence A102465 A139825 A070072
Adjacent sequences: A132080 A132081 A132082 this_sequence A132084 A132085 A132086
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KEYWORD
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nonn
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AUTHOR
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Leroy Quet (q1qq2qqq3qqqq(AT)yahoo.com), Aug 09 2007
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EXTENSIONS
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More terms from Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), Dec 26 2007
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