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A356315
a(n) = 1 if n divides the least j >= n such that n and A276086(j) are coprime, otherwise 0. Here A276086 is the primorial base exp-function.
4
1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1, 0, 1, 1, 1, 0, 0, 0, 1, 1, 1, 0, 0, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, 0, 1, 0, 1, 0, 1
OFFSET
1
FORMULA
a(n) = [0 == A356309(n) (mod n)], where [ ] is the Dirichlet inverse.
a(n) >= A356162(n).
PROG
(PARI) A356315(n) = !(A356309(n)%n);
CROSSREFS
Characteristic function of A356316, whose complement A356317 gives the positions of zeros.
Sequence in context: A359551 A353458 A110242 * A273592 A279693 A368992
KEYWORD
nonn
AUTHOR
Antti Karttunen, Nov 04 2022
STATUS
approved