A359826 Parity of A353348, where A353348 is Dirichlet inverse of the characteristic function for numbers k such that A048675(k) is a multiple of 3.

1, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 1, 0, 0, 1, 1, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 1, 0, 1, 1

Offset

1

Links

Antti Karttunen, Table of n, a(n) for n = 1..100000

Index entries for characteristic functions

Formula

a(n) = A353348(n) mod 2.

a(n) = a(A003961(n)) = a(A348717(n)), for all n >= 1.

a(n) <= A353350(n). [Follows because A332820 is a multiplicative semigroup. See comments in A353348]

Prog

(PARI) A359826(n) = (A353348(n)%2);

Crossrefs

Characteristic function of A359827.

Cf. A003961, A048675, A332820, A353348, A353350.

Cf. also A359836.

Sequence in context: A186741 A173864 A353348 * A353350 A354097 A354927

Adjacent sequences: A359823 A359824 A359825 * A359827 A359828 A359829

Keyword

nonn

Author

Antti Karttunen, Jan 17 2023

Status

approved