login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A120145 a(1)=20; a(n)=floor((41+sum(a(1) to a(n-1)))/2). 0

%I

%S 20,30,45,68,102,153,229,344,516,774,1161,1741,2612,3918,5877,8815,

%T 13223,19834,29751,44627,66940,100410,150615,225923,338884,508326,

%U 762489,1143734,1715601,2573401,3860102,5790153,8685229,13027844

%N a(1)=20; a(n)=floor((41+sum(a(1) to a(n-1)))/2).

%Y Cf. A073941, A112088, A072493.

%K nonn

%O 1,1

%A _Graeme McRae_, Jun 10 2006

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 25 02:01 EDT 2020. Contains 334581 sequences. (Running on oeis4.)