A358841 a(n) = 1 if A276086(n) is of the form 6k+1, where A276086 is the primorial base exp-function.

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

Offset

0

Links

Antti Karttunen, Table of n, a(n) for n = 0..100000

Index entries for characteristic functions

Index entries for sequences related to primorial base

Formula

a(n) = [1 == A276086(n) mod 6], where [ ] is the Iverson bracket.

a(n) = [2 == A328578(n)].

a(n) = A079979(n) - A358842(n) = A059841(n) - A120325(n) - A358842(n).

Prog

(PARI) A358841(n) = { my(m=1, p=2); while(n, m *= (p^(n%p)); n = n\p; p = nextprime(1+p)); (1==(m%6)); };

Crossrefs

Characteristic function of A328632.

Cf. A059841, A079979, A120325, A276086, A328578, A358840, A358842.

Cf. also A353488.

Sequence in context: A015868 A323402 A240355 * A015824 A014856 A015703

Adjacent sequences: A358838 A358839 A358840 * A358842 A358843 A358844

Keyword

nonn

Author

Antti Karttunen, Dec 02 2022

Status

approved