A389136 a(n) = 2*sqrt(n/A037449(n)).

2, 1, 1, 4, 2, 1, 1, 2, 6, 1, 1, 2, 2, 1, 1, 8, 2, 3, 1, 4, 2, 1, 1, 2, 10, 1, 3, 2, 2, 1, 1, 4, 2, 1, 1, 12, 2, 1, 1, 2, 2, 1, 1, 2, 6, 1, 1, 4, 14, 5, 1, 4, 2, 3, 1, 2, 2, 1, 1, 2, 2, 1, 3, 16, 2, 1, 1, 4, 2, 1, 1, 6, 2, 1, 5, 2, 2, 1, 1, 8, 18, 1, 1, 4, 2, 1

Offset

1,1

Links

Hugo Pfoertner, Table of n, a(n) for n = 1..10000

Prog

(PARI) a389136(n) = 2*coredisc(n, 1)[2]

Crossrefs

Cf. A000188, A007913, A037449.

Sequence in context: A367559 A099020 A179438 * A211970 A089688 A229706

Adjacent sequences: A389133 A389134 A389135 * A389137 A389138 A389139

Keyword

nonn

Author

Hugo Pfoertner, Sep 24 2025

Status

approved