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A336358
Sigma(k) has at least the same number of distinct prime factors as k.
3
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 22, 23, 24, 25, 26, 27, 28, 29, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 67, 68, 69, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 85
OFFSET
1,2
COMMENTS
Numbers k for which A058062(k) >= A001221(k).
PROG
(PARI) isA336358(n) = (omega(sigma(n))>=omega(n));
CROSSREFS
Cf. A336357 (complement).
Cf. also A336360.
Sequence in context: A261906 A179239 A287478 * A135579 A250251 A138234
KEYWORD
nonn
AUTHOR
Antti Karttunen, Jul 20 2020
STATUS
approved