BBC Russian

Svoboda | Graniru | BBC Russia | Golosameriki | Facebook

The OEIS is supported by the many generous donors to the OEIS Foundation.

A359764

Parity of A359763, where A359763 is the Dirichlet inverse of characteristic function of the numbers with an even number of prime factors (counted with multiplicity).

1, 0, 0, 1, 0, 1, 0, 0, 1, 1, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 1, 1, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 1, 0, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 1, 0, 1 (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) = A359763(n) mod 2.` `a(n) = A359774(A003961(n)) = A359781(A003961(n)) = A359824(A003961(n)).` `a(n) <= A065043(n). [See comments in A359763]` `a(A030229(n)) = 1 for all n.`
	PROG	`(PARI) A359764(n) = (A359763(n)%2);`
	CROSSREFS	`Parity of A359763 and of A359791.` `Characteristic function of A359765, whose complement A359766 gives the positions of 0's.` `Cf. A003961, A030229, A359763, A359767 (where differs from A065043).` `Cf. also A359595, A359774, A359781, A359824 for similar constructions.` `Sequence in context: A338353 A267598 A194681 * A065043 A189298 A288375` `Adjacent sequences: A359761 A359762 A359763 * A359765 A359766 A359767`
	KEYWORD	`nonn`
	AUTHOR	`Antti Karttunen, Jan 13 2023`
	STATUS	`approved`

License Agreements, Terms of Use, Privacy Policy. .

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