A070761 Values of floor((4/3)^n) that are composite.

4, 9, 42, 56, 74, 99, 133, 177, 236, 315, 420, 560, 747, 996, 1328, 1771, 2362, 3149, 4199, 5599, 7466, 9954, 13273, 17697, 23596, 31462, 41950, 74577, 99437, 132583, 235703, 314271, 419028, 558704, 744938, 993251, 1324335, 1765780, 2354374

Offset: 1

Author

Eric W. Weisstein, May 04 2002

Keywords

• nonn

References

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

Links

• Eric Weisstein's World of Mathematics, Power Floors

Crossrefs

Cf. A046038, A067905, A070762.

Programs

Mathematica

Select[Rest[Union[Floor[(4/3)^Range[80]]]],!PrimeQ[#]&] (* Harvey P. Dale, Sep 23 2011 *)