A369641 Composite numbers k such that k' is a sum of distinct primorial numbers, where k' stands for the arithmetic derivative of k, A003415.

9, 10, 14, 15, 16, 28, 30, 45, 58, 62, 74, 87, 108, 112, 136, 155, 161, 189, 198, 203, 209, 210, 212, 217, 221, 225, 236, 244, 246, 247, 282, 290, 299, 323, 361, 374, 399, 422, 435, 478, 482, 507, 717, 1055, 1205, 1477, 1480, 1631, 1673, 1687, 1940, 2132, 2189, 2212, 2308, 2356, 2519, 2524, 2561, 2587, 2655, 2766

Offset

1,1

Comments

Composite terms of A341518, i.e., composite numbers k such that A327859(k) = A276086(A003415(k)) is squarefree number, or equally, k' is in A276156.

Links

Antti Karttunen, Table of n, a(n) for n = 1..20054 (terms less than 2^30)

Prog

(PARI) \\ See A369640

Crossrefs

Setwise difference A341518 \ A158611.

Cf. A003415, A276086, A276156, A327859, A341517, A369640 (characteristic function).

Cf. A327978, A328243, A369642 (subsequences).

Sequence in context: A247512 A110095 A061445 * A169870 A261614 A088710

Adjacent sequences: A369638 A369639 A369640 * A369642 A369643 A369644

Keyword

nonn

Author

Antti Karttunen, Jan 31 2024

Status

approved