A360561 -id:A360561 - cp's OEIS frontend

A360562 a(n) is the least k such that k*n is a Zumkeller number (A083207).

6, 3, 2, 3, 4, 1, 4, 3, 6, 2, 6, 1, 6, 2, 2, 3, 6, 3, 6, 1, 2, 3, 6, 1, 6, 3, 2, 1, 6, 1, 6, 3, 2, 3, 2, 3, 6, 3, 2, 1, 6, 1, 6, 2, 2, 3, 6, 1, 6, 3, 2, 2, 6, 1, 4, 1, 2, 3, 6, 1, 6, 3, 2, 3, 4, 1, 6, 3, 2, 1, 6, 3, 6, 3, 2, 3, 4, 1, 6, 1, 6, 3, 6, 1, 4, 3, 2

Offset: 1

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Rémy Sigrist, Feb 11 2023

nonn

This sequence is well defined (see A360561).
The values among the first 200000 terms are distributed as follows:
    v  # of occurrences
    -  ----------------
    1             45927
    2             45015
    3             41953
    4             18109
    5                10
    6             48986

Cf. A083207, A360561.

a(n) = { for (k=1, oo, if (is(k*n), return (k))) } \\ see A083207 for the function "is"

1 <= a(n) <= 6.
a(n) = A360561(n) / n.
a(n) = 1 iff n belongs to A083207.

cp's OEIS Frontend

A360562 a(n) is the least k such that k*n is a Zumkeller number (A083207).

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