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A292768 Partial sums of A065387. 2
2, 6, 12, 21, 31, 45, 59, 78, 97, 119, 141, 173, 199, 229, 261, 300, 334, 379, 417, 467, 511, 557, 603, 671, 722, 776, 834, 902, 960, 1040, 1102, 1181, 1249, 1319, 1391, 1494, 1568, 1646, 1726, 1832, 1914, 2022, 2108, 2212, 2314, 2408, 2502, 2642, 2741, 2854, 2958, 3080, 3186, 3324, 3436 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

N. J. A. Sloane, Table of n, a(n) for n = 1..10000

FORMULA

G.f.: (1/(1 - x))*Sum_{k>=1} (mu(k) + 1)*x^k/(1 - x^k)^2. - Ilya Gutkovskiy, Sep 28 2017

CROSSREFS

Cf. A000010, A000203, A065387.

Sequence in context: A214916 A323291 A161203 * A184637 A022450 A011892

Adjacent sequences:  A292765 A292766 A292767 * A292769 A292770 A292771

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Sep 28 2017

STATUS

approved

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Last modified April 19 02:19 EDT 2021. Contains 343105 sequences. (Running on oeis4.)