A369641 - OEIS

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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

(list; graph; refs; listen; history; text; internal format)

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).