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A329528
Numbers k such that the k-th lucky number (A000959) is divisible by k.
1
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
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 A373539 A027482
KEYWORD
nonn,more
AUTHOR
Amiram Eldar, Nov 15 2019
STATUS
approved