A358778 Positions of positive terms in A358777, which is the Dirichlet inverse of A353557.

1, 135, 189, 225, 297, 315, 351, 375, 441, 459, 495, 513, 525, 585, 621, 693, 735, 765, 783, 819, 825, 837, 855, 875, 975, 999, 1029, 1035, 1071, 1089, 1107, 1155, 1161, 1197, 1225, 1269, 1275, 1287, 1305, 1365, 1375, 1395, 1425, 1431, 1449, 1521, 1593, 1617, 1625, 1647, 1665, 1683, 1715, 1725, 1785

Offset: 1

Author

Antti Karttunen, Dec 23 2022

Keywords

• nonn

Comments

Question: Is A046317 \ (A030514\{16}) a subsequence of this sequence?

30375 = 3^5 * 5^3 is the first term with more than 4 prime factors (when counted with multiplicity).

Links

• Antti Karttunen, Table of n, a(n) for n = 1..20000

Crossrefs

Cf. A046317, A353557, A358777.

Programs

PARI

isA358778(n) = (A358777(n)>0);