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Search: id:A104804
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| A104804 |
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"Rounded hypotenuses": a(n)=round[sqrt[a(n-1)^2+a(n-2)^2]], a(1)=1, a(2)=3. |
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+0
7
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| 1, 3, 3, 4, 5, 6, 8, 10, 13, 16, 21, 26, 33, 42, 53, 68, 86, 110, 140, 178, 226, 288, 366, 466, 593, 754, 959, 1220, 1552, 1974, 2511, 3194, 4063, 5168, 6574, 8362, 10637, 13530, 17211, 21892, 27847, 35422, 45057, 57314, 72904, 92736, 117962, 150050
(list; graph; listen)
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OFFSET
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1,2
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MATHEMATICA
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a[n_] := a[n] = Round[ Sqrt[ a[n - 1]^2 + a[n - 2]^2]]; a[1] = 1; a[2] = 3; Table[ a[n], {n, 48}] (from Robert G. Wilson v Mar 28 2005)
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CROSSREFS
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Cf. A104803, A104805.
Sequence in context: A063197 A011977 A104803 this_sequence A144489 A100091 A104806
Adjacent sequences: A104801 A104802 A104803 this_sequence A104805 A104806 A104807
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KEYWORD
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nonn
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AUTHOR
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Zak Seidov (zakseidov(AT)yahoo.com), Mar 26 2005
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EXTENSIONS
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More terms from Robert G. Wilson v (rgwv(AT)rgwv.com), Mar 28 2005
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