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Smallest nontrivial (not = 10^(n-1)) n-digit 7-smooth number. Or smallest n-digit number > 10^(n-1) with prime divisors < 10.
1

%I #10 Sep 19 2024 14:42:20

%S 2,12,105,1008,10080,100352,1000188,10001880,100018800,1000188000,

%T 10001880000,100018800000,1000188000000,10001880000000,

%U 100018800000000,1000188000000000,10001473779644928,100008061430022144

%N Smallest nontrivial (not = 10^(n-1)) n-digit 7-smooth number. Or smallest n-digit number > 10^(n-1) with prime divisors < 10.

%Y Cf. A085868, A002473.

%K base,nonn

%O 1,1

%A _Amarnath Murthy_ and Meenakshi Srikanth (menakan_s(AT)yahoo.com), Jul 06 2003

%E More terms from _Ray Chandler_, Aug 08 2003