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A176540 1 together with the semiprimes. 2
1, 4, 6, 9, 10, 14, 15, 21, 22, 25, 26, 33, 34, 35, 38, 39, 46, 49, 51, 55, 57, 58, 62, 65, 69, 74, 77, 82, 85, 86, 87, 91, 93, 94, 95, 106, 111, 115, 118, 119, 121, 122, 123, 129, 133, 134, 141, 142, 143, 145, 146, 155, 158, 159, 161, 166, 169, 177, 178, 183, 185, 187 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
The products of two noncomposite numbers that do not contain prime numbers.
LINKS
MATHEMATICA
Join[{1}, Select[Range[200], PrimeOmega[#]==2&]] (* Harvey P. Dale, Dec 31 2015 *)
CROSSREFS
Sequence in context: A359765 A240938 A001358 * A108764 A193801 A129336
KEYWORD
nonn
AUTHOR
EXTENSIONS
Definition and comment swapped by Michel Marcus, Aug 09 2014
STATUS
approved

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Last modified September 17 10:45 EDT 2024. Contains 375987 sequences. (Running on oeis4.)