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Search: id:A104196
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| A104196 |
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Sum of CarmichaelLambda[n] between successive powers of 2. |
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+0
1
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| 1, 3, 14, 46, 206, 694, 2610, 9420, 35038, 130784, 484136, 1827996, 6891816, 26121822, 99232238, 379021972, 1450654796, 5564804616, 21406426134, 82457456808
(list; graph; listen)
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OFFSET
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1,2
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FORMULA
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a(n)=Sum[CarmichaelLambda[i], {i, 2^n, 2^(n + 1) - 1}]
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MATHEMATICA
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a= Table[Sum[CarmichaelLambda[i], {i, 2^n, 2^(n + 1) - 1}], {n, 0, 24}]
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CROSSREFS
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Sequence in context: A032055 A123350 A027953 this_sequence A006900 A024453 A139263
Adjacent sequences: A104193 A104194 A104195 this_sequence A104197 A104198 A104199
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KEYWORD
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nonn
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AUTHOR
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Roger Bagula (rlbagulatftn(AT)yahoo.com), Mar 12 2005
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