login
A359781
Parity of A359780, where A359780 is the Dirichlet inverse of the characteristic function of the numbers with even arithmetic derivative (A003415).
8
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
OFFSET
1
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
KEYWORD
nonn
AUTHOR
Antti Karttunen, Jan 13 2023
STATUS
approved