This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A151760 #8 Feb 02 2021 16:47:20 %S A151760 0,0,0,0,1,4,6,8,13,12,10,16,18,16,20,24,13,12,18,16,22,24,28,24,18, %T A151760 16,28,24,20,24,24,0,13,12,18,16,30,24,28,24,22,24,36,24,28,24,24,0, %U A151760 18,16,28,24,28,24,24,0,20,24,24,0,24,0,0,0,13,12,18,16,30,24,28,24,30,24,36 %N A151760 G.f.: Theta^4, where Theta = Sum_{k>=0} x^(2^k). %C A151760 Number of ways to write n as an ordered sum of 4 powers of 2. - _Ilya Gutkovskiy_, Feb 02 2021 %H A151760 Robert Israel, <a href="/A151760/b151760.txt">Table of n, a(n) for n = 0..10000</a> %p A151760 N:= 10: # for a(0) .. a(2^N) %p A151760 g:= add(x^(2^i),i=0..N)^4: %p A151760 S:= series(g,x,2^N+1): %p A151760 seq(coeff(S,x,j),j=0..2^N); # _Robert Israel_, Mar 27 2020 %Y A151760 Cf. A151758. %K A151760 nonn %O A151760 0,6 %A A151760 _N. J. A. Sloane_, Jun 22 2009