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Search: id:A109150
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| A109150 |
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Numbers n such that the continued fraction sequence of sqrt(n) is not multiplicative. |
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+0
1
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| 2, 5, 6, 10, 11, 12, 17, 18, 19, 20, 21, 26, 27, 28, 29, 30, 31, 37, 38, 39, 40, 41, 42, 43, 45, 46, 50, 51, 52, 53, 54, 55, 56, 57, 61, 65, 66, 67, 68, 69, 70, 71, 72, 73, 76, 77, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 97, 101, 102, 103, 104, 105, 106, 107
(list; graph; listen)
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OFFSET
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1,1
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EXAMPLE
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The continued fraction of sqrt(21) is (4; 1, 1, 2, 1, 1, 8, ...), which is not multiplicative since a(2) = 1, a(3) = 2, but a(6) = 8.
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CROSSREFS
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Complement of A109054.
Adjacent sequences: A109147 A109148 A109149 this_sequence A109151 A109152 A109153
Sequence in context: A054463 A007503 A112967 this_sequence A004202 A013647 A077471
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KEYWORD
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nonn,easy
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AUTHOR
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Mitch Harris (Harris.Mitchell(AT)mgh.harvard.edu), Jun 20 2005
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