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A304526 Möbius transform of A064664, the inverse of EKG-sequence. 7
1, 1, 4, 1, 9, -2, 13, 5, 1, -2, 19, 2, 27, -2, -3, 9, 32, 7, 36, 8, -3, -2, 42, 4, 14, -2, 16, 12, 56, 15, 60, 14, -3, -2, 2, 15, 66, -2, -3, 17, 73, 23, 80, 21, 27, -2, 88, 20, 36, 23, -3, 19, 99, 20, 24, 18, -3, -2, 106, 18, 114, -2, 35, 33, 17, 41, 127, 32, -3, 33, 133, 24, 137, -2, 44, 34, 45, 44, 150, 23, 54, -2, 159, 27, 42, -2, -3, 33, 166, 25, 52 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Antti Karttunen, Table of n, a(n) for n = 1..32768

Index entries for sequences related to EKG sequence

FORMULA

a(n) = Sum_{d|n} A008683(n/d)*A064664(d).

a(n) = A064664(n) - A304527(n).

For all n >= 1, a(A000040(n)) = A064423(n).

For n >= 2, a(2*A000040(n)) = -2.

For n >= 3, a(3*A000040(n)) = -3.

PROG

(PARI) A304526(n) = sumdiv(n, d, moebius(n/d)*A064664(d));

CROSSREFS

Cf. A008683, A064423, A064664, A304527.

Sequence in context: A331151 A085383 A306744 * A260253 A261981 A153265

Adjacent sequences:  A304523 A304524 A304525 * A304527 A304528 A304529

KEYWORD

sign

AUTHOR

Antti Karttunen, May 18 2018

STATUS

approved

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Last modified February 16 21:26 EST 2020. Contains 331975 sequences. (Running on oeis4.)