The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A195082 Fractalization of (1+[2n/3]), where [ ] = floor. 3

%I #6 Mar 30 2012 18:57:44

%S 1,1,2,1,2,3,1,2,4,3,1,2,4,5,3,1,2,4,5,6,3,1,2,4,5,7,6,3,1,2,4,5,7,8,

%T 6,3,1,2,4,5,7,8,9,6,3,1,2,4,5,7,8,10,9,6,3,1,2,4,5,7,8,10,11,9,6,3,1,

%U 2,4,5,7,8,10,11,12,9,6,3,1,2,4,5,7,8,10,11,13,12,9,6,3,1,2,4

%N Fractalization of (1+[2n/3]), where [ ] = floor.

%C See A194959 for a discussion of fractalization and the interspersion fractally induced by a sequence. The sequence (1+[2n/3]) is essentially A004396.

%t r = 2/3; p[n_] := 1 + Floor[n*r]

%t Table[p[n], {n, 1, 90}] (* ess A004396 *)

%t g[1] = {1}; g[n_] := Insert[g[n - 1], n, p[n]]

%t f[1] = g[1]; f[n_] := Join[f[n - 1], g[n]]

%t f[20] (* A195082 *)

%t row[n_] := Position[f[30], n];

%t u = TableForm[Table[row[n], {n, 1, 5}]]

%t v[n_, k_] := Part[row[n], k];

%t w = Flatten[Table[v[k, n - k + 1], {n, 1, 13}, ]

%t {k, 1, n}]] (* A195083 *)

%t q[n_] := Position[w, n]; Flatten[Table[q[n],

%t {n, 1, 80}]] (* A195096 *)

%Y Cf. A004396, A195083, A195096.

%K nonn

%O 1,3

%A _Clark Kimberling_, Sep 08 2011

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 19 14:45 EDT 2024. Contains 372698 sequences. (Running on oeis4.)