The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A104909 a(n) = A104908(n) - 10*A104863(n). 3

%I #6 Jun 28 2021 02:48:18

%S 0,0,6,5,7,11,15,24,36,51,70,93,125,163,214,274,348,445,570,728,926,

%T 1181,1505,1918,2440,3108,3954,5035,6403,8152,10366,13196,16788,21357,

%U 27172,34562,43969,55928,71150,90509,115128,146446,186287,236964,301424,383419

%N a(n) = A104908(n) - 10*A104863(n).

%H G. C. Greubel, <a href="/A104909/b104909.txt">Table of n, a(n) for n = 1..1000</a>

%t A104863[n_]:= A104863[n]= If[n<3, 10*(2*n-1), Floor[Sqrt[A104863[n-1]^2 + A104863[n - 2]^2]]];

%t A104908[n_]:= A104908[n]= If[n<3, 100*(2*n-1), Floor[Sqrt[A104908[n-1]^2 + A104908[n-2]^2]]];

%t A104909[n_]:= A104908[n] -10*A104863[n];

%t Table[A104909[n], {n, 60}] (* _G. C. Greubel_, Jun 27 2021 *)

%Y Cf. A104803, A104908, A104910.

%K nonn

%O 1,3

%A _Zak Seidov_, Mar 29 2005

%E Terms a(33) onward added by _G. C. Greubel_, Jun 27 2021

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.

Last modified September 13 11:30 EDT 2024. Contains 375905 sequences. (Running on oeis4.)