

A070759


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


5



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
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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. A043037, A070758, A067904, A070762.
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



