login
Second of two trees generated by the Beatty sequence of sqrt(2).
5

%I #15 May 25 2015 15:36:07

%S 2,6,8,20,11,27,28,68,15,37,38,92,39,95,96,232,21,51,52,126,53,129,

%T 130,314,55,133,134,324,135,327,328,792,29,71,72,174,73,177,178,430,

%U 74,180,182,440,183,443,444,1072,77,187,188

%N Second of two trees generated by the Beatty sequence of sqrt(2).

%C This tree grows from (L(2),U(2))=(2,6). The other tree grows from (L(1),U(1))=(1,3). Here, L and U are Beatty sequences. See the comments at A183170 and A183173.

%H Ivan Neretin, <a href="/A183171/b183171.txt">Table of n, a(n) for n = 1..8192</a>

%F (See A183170.)

%e First levels of the tree:

%e .......................2

%e .......................6

%e ...............8.................20

%e ..........11.......27........28.......68

%e ........15..37...38..92....39..95...96..232

%t a = {2, 6}; row = {a[[-1]]}; r = Sqrt[2]; s = r/(r - 1); Do[a = Join[a, row = Flatten[{Floor[#*{r, s}]} & /@ row]], {n, 5}]; a (* _Ivan Neretin_, May 25 2015 *)

%Y Cf. A183170, A183173.

%K nonn,tabf

%O 1,1

%A _Clark Kimberling_, Dec 28 2010