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.

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

Author

Antti Karttunen, Jan 10 2020

Keywords

• nonn

Links

• Antti Karttunen, Table of n, a(n) for n = 1..2366

Crossrefs

Positions of nonzero terms in A330735.

Cf. A002805, A309639.