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A088030
Smallest k such that k^3 -1 is a squarefree number with n prime divisors. a(n) = A088029(n)^(1/3).
1
2, 3, 15, 11, 87, 291, 1296, 3446, 7991, 91971, 106031, 1721591, 10625871, 53983491, 327917591, 1329773831
OFFSET
1,1
COMMENTS
a(17) > 4*10^9. - Giovanni Resta, Nov 06 2012
EXAMPLE
a(4) = 11, 11^3 -1 = 2*5*7*19.
CROSSREFS
Cf. A088029.
Sequence in context: A082572 A075244 A342567 * A101047 A251618 A309765
KEYWORD
more,nonn
AUTHOR
Amarnath Murthy, Sep 19 2003
EXTENSIONS
More terms from Ray Chandler, Oct 04 2003
2 more terms from Lambert Herrgesell (zero815(AT)googlemail.com), Feb 20 2008
a(14)-a(16) from Giovanni Resta, Nov 06 2012
STATUS
approved