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A119320
Difference between 10^n and the largest n-digit semiprime.
2
1, 5, 2, 2, 2, 3, 2, 3, 9, 3, 3, 3, 11, 3, 2, 6, 11, 7, 9, 17, 3, 3, 11, 3, 3, 17, 5, 5, 9, 33, 11, 17, 17, 3, 11, 41, 39, 11, 29, 7, 11, 6, 21, 11, 17, 17, 9, 17, 11, 7, 11, 83, 49, 3, 2, 11, 3, 38, 23, 7, 11, 14, 9, 33, 3, 11, 11, 11, 31, 66, 9, 47, 21, 17, 29
OFFSET
1,2
LINKS
FORMULA
a(n) = 10^n - A098450(n).
PROG
(PARI) a(n) = my(k=10^n-1); while (bigomega(k) != 2, k--); 10^n - k; \\ Michel Marcus, Sep 18 2021
CROSSREFS
Cf. A098450.
Sequence in context: A303579 A306966 A286016 * A363252 A070962 A380816
KEYWORD
base,nonn
AUTHOR
Zak Seidov, May 14 2006
EXTENSIONS
More terms from Amiram Eldar, Sep 18 2021
STATUS
approved