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A369976
Numbers k for which A369974(k) is odd.
6
1, 9, 12, 15, 16, 20, 21, 25, 28, 33, 35, 39, 44, 49, 51, 52, 55, 57, 65, 68, 69, 76, 77, 85, 87, 91, 92, 93, 95, 108, 111, 115, 116, 119, 121, 123, 124, 129, 133, 135, 141, 143, 145, 148, 155, 159, 161, 164, 169, 172, 177, 180, 183, 185, 187, 188, 189, 192, 201, 203, 205, 209, 212, 213, 215, 217, 219, 221, 235
OFFSET
1,2
COMMENTS
Because A369002 is a multiplicative semigroup this is its subsequence. Proof is similar to one given in A359780.
LINKS
PROG
(PARI) \\ See A369975.
CROSSREFS
Cf. A083345, A369001, A369975 (characteristic function).
Positions of odd terms in A369974 and in A369978.
Subsequence of A369002.
Cf. also A359780.
Sequence in context: A050435 A176656 A369002 * A345498 A248903 A138945
KEYWORD
nonn
AUTHOR
Antti Karttunen, Feb 09 2024
STATUS
approved