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Numbers k for which A359425(k) is odd, where A359425 is the Dirichlet convolution of the arithmetic derivative with the primorial base exp- function.

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Antti Karttunen: Yes, sometimes I have added "the" before "Dirichlet convolution" or "Dirichlet inverse" (unless the definition starts with "Dirichlet ..."), but I haven't been sure whether it's correct usage. I will use it from now on, thanks.

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Jon E. Schoenfield: “exp-function”? “exp function”?

Jon E. Schoenfield: In the Name field, should there be a “the” before the word “Dirichlet”?

allocatedNumbers k for which A359425(k) is odd, where A359425 is Dirichlet convolution of the arithmetic derivative with the primorial Anttibase Karttunenexp-function.

4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 32, 34, 38, 40, 44, 46, 48, 50, 52, 56, 58, 62, 64, 68, 74, 76, 80, 82, 86, 88, 90, 92, 94, 96, 98, 104, 106, 112, 116, 118, 122, 124, 126, 128, 134, 136, 142, 146, 148, 150, 152, 158, 160, 164, 166, 172, 176, 178, 180, 184, 188, 192, 194, 198, 202, 206

1,1

(PARI) isA360127(n) = A360125(n);

Positions of odd terms in A359425, positions of 1's in A360125, which is the characteristic function.

Complement of A360126.

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Antti Karttunen, Feb 19 2023

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allocated for Antti Karttunen

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