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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A151761 G.f.: Theta^5, where Theta = Sum_{k>=0} x^(2^k). 5

%I

%S 0,0,0,0,0,1,5,10,15,25,31,30,40,50,50,60,75,65,55,70,66,70,90,100,

%T 100,90,90,100,110,100,120,120,75,65,95,70,90,110,130,100,126,110,130,

%U 140,150,140,160,120,100,90,130,100,150,140,160,120,110,100,160,120,120,120,120

%N G.f.: Theta^5, where Theta = Sum_{k>=0} x^(2^k).

%C Number of ways to write n as an ordered sum of 5 powers of 2. - _Ilya Gutkovskiy_, Feb 02 2021

%p b:= proc(n, t) option remember; `if`(n=0, `if`(t=0, 1, 0),

%p `if`(t<1, 0, add(b(n-2^j, t-1), j=0..ilog2(n))))

%p end:

%p a:= n-> b(n, 5):

%p seq(a(n), n=0..62); # _Alois P. Heinz_, Feb 02 2021

%Y Cf. A151758.

%K nonn

%O 0,7

%A _N. J. A. Sloane_, Jun 22 2009

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.

Last modified June 14 15:46 EDT 2021. Contains 345026 sequences. (Running on oeis4.)