1,1

R. K. Guy, Unsolved Problems in Number Theory, E19.

Table of n, a(n) for n=1..69.

Eric Weisstein's World of Mathematics, Floor Function

Select[Range[100], CompositeQ[Floor[(3/2)^#]]&] (* Harvey P. Dale, Sep 23 2014 *)

(PARI) is(n)=n>7&&!isprime(floor(1.5^n)) \\ Charles R Greathouse IV, Oct 27 2011

Sequence in context: A004449 A168098 A020722 * A089017 A182361 A023391

Adjacent sequences: A046034 A046035 A046036 * A046038 A046039 A046040

nonn

Eric W. Weisstein

approved