A361709 - OEIS

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A361709

Moebius transform of nonprimes.

1

1, 3, 5, 4, 8, 1, 11, 6, 9, 4, 17, 6, 20, 7, 10, 11, 25, 8, 27, 10, 15, 12, 33, 9, 27, 14, 24, 14, 41, 12, 44, 21, 25, 20, 30, 14, 51, 23, 29, 20, 56, 15, 59, 25, 30, 27, 64, 20, 56, 26, 39, 30, 73, 24, 50, 31, 45, 35, 80, 18, 83, 37, 45, 41, 59, 26, 90, 39, 54, 30

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

LINKS

Table of n, a(n) for n=1..70.

N. J. A. Sloane, Transforms

FORMULA

a(n) = Sum_{d|n} mu(n/d) * A018252(d).

CROSSREFS

Cf. A007444, A018252, A361708.

Sequence in context: A242640 A210195 A069918 * A200700 A356377 A075380

Adjacent sequences: A361706 A361707 A361708 * A361710 A361711 A361712

KEYWORD

nonn

AUTHOR

Ilya Gutkovskiy, Mar 21 2023

STATUS

approved