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A330736
Numbers k such that k is not a multiple of A309639(k), where A309639(k) is the index of the least harmonic number H_i whose denominator (A002805) is divisible by k.
3
21, 24, 42, 69, 84, 105, 115, 120, 138, 168, 171, 201, 207, 210, 225, 230, 276, 301, 329, 342, 345, 402, 407, 414, 420, 450, 451, 460, 473, 483, 505, 515, 602, 603, 605, 639, 658, 684, 690, 759, 804, 805, 814, 828, 840, 855, 869, 891, 897, 900, 902, 903, 913, 920, 946, 966, 987, 1005, 1010, 1030, 1035, 1173, 1197
OFFSET
1,1
LINKS
CROSSREFS
Positions of nonzero terms in A330735.
Sequence in context: A033267 A186402 A346294 * A303814 A308350 A141734
KEYWORD
nonn
AUTHOR
Antti Karttunen, Jan 10 2020
STATUS
approved