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URL: https://oeis.org/A380538

⇱ A380538 - OEIS


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A380538
Numbers k such that k is not a multiple of A351566(k), where A351566 is the radix prime of the second least significant nonzero digit in the primorial base expansion of n, or 1 if there is no such digit.
3
5, 7, 8, 11, 13, 14, 16, 17, 19, 22, 23, 26, 28, 29, 31, 32, 34, 35, 36, 37, 38, 41, 43, 44, 46, 47, 48, 49, 52, 53, 54, 56, 58, 59, 61, 62, 64, 65, 66, 67, 68, 71, 72, 73, 74, 76, 77, 78, 79, 82, 83, 86, 88, 89, 92, 94, 95, 96, 97, 98, 101, 102, 103, 104, 106, 107, 108, 109, 112, 113, 114, 116, 118, 119, 121, 122, 124, 125
OFFSET
1,1
PROG
(PARI) is_A380538(n) = !(A380536(n));
CROSSREFS
Cf. A049345, A351566, A380536, A380537 (complement).
Sequence in context: A088299 A287068 A013635 * A191929 A082728 A374042
KEYWORD
nonn
AUTHOR
Antti Karttunen, Feb 12 2025
STATUS
approved