A118502 Numbers k that divide floor((4/3)^k).

1, 7, 14, 21, 66, 205, 583, 837, 1259, 1631, 2178, 6346, 15851, 58371, 61804, 129196, 409879, 1670753

Offset

1,2

Comments

Next term after 409879 is greater than 10^6.

Links

Table of n, a(n) for n=1..18.

Example

floor((4/3)^21) = 420 and 420 is divisible by 21, so 21 is in the sequence.

Mathematica

t = 1; Do[t = 4t/3; If[Mod[Floor[t], n] == 0, Print[n]], {n, 10^6}]

Crossrefs

Cf. A073633.

Sequence in context: A028555 A061823 A018890 * A190367 A246172 A366112

Adjacent sequences: A118499 A118500 A118501 * A118503 A118504 A118505

Keyword

nonn,more

Author

Ryan Propper, May 06 2006

Extensions

a(18) from Ryan Propper, Jul 21 2006

Status

approved