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A070758 Values of floor((3/2)^n) that are composite. 4
25, 38, 57, 86, 129, 194, 291, 437, 656, 985, 1477, 2216, 3325, 11222, 16834, 25251, 37876, 56815, 85222, 127834, 191751, 287626, 431439, 647159, 970739, 1456109, 2184164, 3276246, 4914369, 7371554, 11057332, 16585998, 24878997, 37318496 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
REFERENCES
R. K. Guy, Unsolved Problems in Number Theory, E19
LINKS
Eric Weisstein's World of Mathematics, Power Floors
MAPLE
remove(isprime, [seq(floor((3/2)^n), n=2..100)]); # Robert Israel, Oct 30 2019
MATHEMATICA
Select[Floor[(3/2)^Range[50]], CompositeQ] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, May 11 2017 *)
CROSSREFS
Sequence in context: A120148 A038516 A080386 * A104667 A354722 A354723
KEYWORD
nonn
AUTHOR
Eric W. Weisstein, May 04 2002
STATUS
approved

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Last modified April 21 10:46 EDT 2024. Contains 371852 sequences. (Running on oeis4.)