A329528 Numbers k such that the k-th lucky number (A000959) is divisible by k.

1, 7, 39, 41, 225, 6257, 33463, 33471, 182157, 182167, 1008899, 32487701

Offset

1,2

Comments

The corresponding lucky numbers, A000959(a(n)) are 1, 21, 195, 205, 1575, 68827, 435019, 435123, 2732355, 2732505, 17151283, 682241721, ...

The corresponding quotients A000959(a(n))/a(n) are 1, 3, 5, 5, 7, 11, 13, 13, 15, 15, 17, 21, ...

a(13) > 4*10^9, if it exists. - Giovanni Resta, May 10 2020

Links

Table of n, a(n) for n=1..12.

Example

7 is in the sequence since the 7th lucky number, 21 = 3 * 7 is divisible by 7.

Crossrefs

Cf. A000959.

Cf. also A329529.

Sequence in context: A229126 A158576 A304012 * A215441 A027482 A352310

Adjacent sequences: A329525 A329526 A329527 * A329529 A329530 A329531

Keyword

nonn,more

Author

Amiram Eldar, Nov 15 2019

Status

approved