A174112 After correction, duplicate of A111490.

1, 2, 4, 5, 9, 9, 15, 16, 21, 23, 33, 29, 41, 45, 51, 52, 68, 65, 83, 81, 91, 99, 121, 109, 128, 138, 152, 152, 180, 168, 198, 199, 217, 231, 253, 234, 270, 286, 308, 298, 338, 326, 368

Offset

1,2

Links

Table of n, a(n) for n=1..43.

Formula

a(n) = Sum_{i=1..n} A033879(i) = Sum_{i=1..n} (2*i - (sum of divisors of i)) = Sum_{i=1..n} (A005843(i)-A000203(i) = Sum_{i=1..n}(A005843(i) - Sum{i=1..n} A000203(i).

Crossrefs

Sequence in context: A270097 A167511 A242398 * A111490 A079784 A189210

Adjacent sequences: A174109 A174110 A174111 * A174113 A174114 A174115

Keyword

dead

Status

approved