A380464 First coefficient of the lindep transform of A007947, squarefree kernel of n.

1, 1, 1, 2, 1, 1, 1, 1, 3, 1, 1, 2, 1, 1, 1, 1, 1, 3, 1, 2, 1, 1, 1, 4, 5, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 6, 1, 1, 1, 4, 1, 1, 1, 2, 3, 1, 1, 1, 7, 5, 1, 2, 1, 1, 1, 4, 1, 1, 1, 2, 1, 1, 3, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 5, 2, 1, 1, 1, 8, 1, 1, 1, 2, 1, 1, 1, 4, 1, 3, 1, 2, 1, 1, 1, 1, 1, 7, 3, 10, 1, 1, 1, 4, 1

Offset

1,4

Comments

See A339790 for a definition of lindep-transform.

See also comments in A380465 and A380466.

Links

Antti Karttunen, Table of n, a(n) for n = 1..20000

Prog

(PARI)
A007947(n) = factorback(factorint(n)[, 1]); \\ From A007947
A380464(n) = { my(v=lindep([A007947(n), n, 1])); (v*sign(v[1]))[1]; };

Crossrefs

Cf. A007947, A380465, A380466.

Cf. also A339790, A380544.

Sequence in context: A162154 A134505 A329376 * A336643 A334039 A076933

Adjacent sequences: A380461 A380462 A380463 * A380465 A380466 A380467

Keyword

nonn,new

Author

Antti Karttunen, Jan 27 2025

Status

approved