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Search: id:A141391
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| A141391 |
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a(n) is the smallest unused number such that the RMS (Root Mean Square) of a(0) through a(n) is an integer. |
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+0
4
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| 1, 7, 5, 11, 28, 14, 182, 70, 2, 66, 1518, 462, 1540, 616, 296, 600, 1950, 750, 10, 730, 2336, 876, 2436, 996, 3154, 1162, 5698, 210, 1554, 3234, 1638, 5382, 1872, 23088, 4368, 5934, 201, 4359, 77991, 7021, 13090, 4270, 12950, 74, 12802, 76466, 16954
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OFFSET
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0,2
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COMMENT
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Actual RMS values are given by A141392
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EXAMPLE
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a(3) = 11. Sqrt(mean(1^2, 7^2, 5^2, k^2)) is an integer for k in {5,11,37}. We have already used 5 for a(2), so 11 is the smallest value available for a(3).
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CROSSREFS
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Cf. A141392, A141393, A141394, A140480.
Sequence in context: A113816 A073823 A166519 this_sequence A135766 A067745 A070408
Adjacent sequences: A141388 A141389 A141390 this_sequence A141392 A141393 A141394
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KEYWORD
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nonn
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AUTHOR
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Andrew Weimholt (andrew(AT)weimholt.com), Jun 29 2008
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