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A359781

Parity of A359780, where A359780 is the Dirichlet inverse of the characteristic function of the numbers with even arithmetic derivative (A003415).

1, 0, 0, 1, 0, 0, 0, 1, 1, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 0, 1, 1, 0, 1, 1, 0, 0, 1, 1, 0, 0, 0, 1, 0, 0, 0, 1, 1, 0, 1, 1, 0, 0, 1, 1, 1, 0, 0, 1, 0, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 0, 1, 1, 0, 0, 1, 0, 0, 0, 1, 1, 0, 1, 1, 0, 0, 1, 1, 1, 0, 1, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 1, 0, 1, 1, 0, 0, 0, 0 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1`
	LINKS	`Antti Karttunen, Table of n, a(n) for n = 1..100000` `Index entries for characteristic functions`
	FORMULA	`a(n) = A359780(n) mod 2.` `a(n) <= A358680(n). [See comments in A359780]` `a(A056913(n)) = 1.`
	PROG	`(PARI) A359781(n) = (A359780(n)%2);`
	CROSSREFS	`Parity of A359780 and of A359790.` `Characteristic function of A359783, whose complement is A359782.` `Cf. A056913, A358680, A359784 (where differs from A358680).` `Cf. also A359764 [= a(A003961(n)], A359774.` `Sequence in context: A120523 A269625 A359828 * A030315 A119498 A070912` `Adjacent sequences: A359778 A359779 A359780 * A359782 A359783 A359784`
	KEYWORD	`nonn`
	AUTHOR	`Antti Karttunen, Jan 13 2023`
	STATUS	`approved`

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Last modified August 22 01:28 EDT 2024. Contains 375353 sequences. (Running on oeis4.)