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A373487
Numbers k such that A276085(k) is a multiple of A003415(k), where A003415 is the arithmetic derivative and A276085 is the primorial base log-function.
5
1, 2, 3, 5, 7, 10, 11, 13, 15, 17, 19, 23, 28, 29, 31, 35, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 91, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 143, 149, 151, 155, 157, 161, 163, 167, 173, 179, 181, 187, 191, 193, 197, 199, 203, 209, 211, 215, 221, 223, 227, 229, 233, 239, 241, 251, 257, 263
OFFSET
1,2
LINKS
PROG
(PARI) isA373487 = A373486;
CROSSREFS
Cf. A003415, A276085, A369650 (subsequence), A373486 (characteristic function).
After the initial 1, gives the positions of 0's in A373148.
Disjoint union of A000040 and A373488 (nonprime terms).
Cf. also A373489.
Sequence in context: A002269 A327445 A325119 * A047487 A327203 A048461
KEYWORD
nonn
AUTHOR
Antti Karttunen, Jun 09 2024
STATUS
approved