A070759 n for which floor((3/2)^n) is prime.

2, 3, 4, 5, 6, 7, 21, 22, 98, 106, 164, 189, 219, 364, 443, 670, 775, 1919, 2204, 2715, 3692, 4228, 4912, 10466, 12300, 14087, 21659, 28170, 55832, 66577, 87309, 87505, 98144, 167512, 259517

Offset

1,1

Comments

No more terms through 500000. - Ryan Propper, Dec 28 2008

References

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

Links

Table of n, a(n) for n=1..35.

Eric Weisstein's World of Mathematics, Power Floors

Mathematica

Do[ If[ PrimeQ[ Floor[(3/2)^n]], Print[n]], {n, 1, 12500}]

Crossrefs

Cf. A070758, A067904, A070762.

Indices of primes in A002379.

Sequence in context: A024644 A297182 A010354 * A282138 A106275 A303368

Adjacent sequences: A070756 A070757 A070758 * A070760 A070761 A070762

Keyword

nonn

Author

Eric W. Weisstein, May 04 2002

Extensions

One more term from Ralf Stephan, Oct 13 2002

Corrected and extended by Robert G. Wilson v, Jan 15 2003

More terms from Ryan Propper, Jan 25 2008

6 more terms from Ryan Propper, Dec 28 2008

Status

approved