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A104196
Sum of CarmichaelLambda[n] between successive powers of 2.
0
1, 3, 14, 46, 206, 694, 2610, 9420, 35038, 130784, 484136, 1827996, 6891816, 26121822, 99232238, 379021972, 1450654796, 5564804616, 21406426134, 82457456808
OFFSET
1,2
FORMULA
a(n)=Sum[CarmichaelLambda[i], {i, 2^n, 2^(n + 1) - 1}]
MATHEMATICA
a= Table[Sum[CarmichaelLambda[i], {i, 2^n, 2^(n + 1) - 1}], {n, 0, 24}]
CROSSREFS
Sequence in context: A123350 A027953 A264501 * A281869 A202144 A287426
KEYWORD
nonn,less
AUTHOR
Roger L. Bagula, Mar 12 2005
STATUS
approved