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a(n) = [ 1/{n*sqrt(7)} ], where {x} := x - [ x ].
3

%I #9 Aug 03 2014 14:27:15

%S 1,3,1,1,4,1,1,6,1,2,9,1,2,24,1,3,1,1,3,1,1,4,1,2,6,1,2,12,1,2,54,1,3,

%T 1,1,4,1,1,5,1,2,8,1,2,17,1,2,1,1,3,1,1,4,1,1,6,1,2,10,1,2,27,1,3,1,1,

%U 3,1,1,4,1,2,7,1,2,12,1,2,69,1,3,1,1,4,1,1,5,1,2,8,1,2,18,1,2

%N a(n) = [ 1/{n*sqrt(7)} ], where {x} := x - [ x ].

%H Clark Kimberling, <a href="/A024564/b024564.txt">Table of n, a(n) for n = 1..1000</a>

%t Table[Floor[1/FractionalPart[n*Sqrt[7]]], {n, 100}] (* _Clark Kimberling_, Aug 15 2012 *)

%Y Cf. A024563.

%K nonn

%O 1,2

%A _Clark Kimberling_

%E Corrected by _Clark Kimberling_, Aug 15 2012