A184311 - OEIS

A184311

Number of strings of numbers x(i=1..n) in 0..2 with sum i^2*x(i)^3 equal to n^2*8

%I #5 Mar 31 2012 12:35:59

%S 1,1,1,2,2,2,3,8,12,21,47,117,316,707,1806,4044,9736,21215,47912,

%T 104631,225418,486719,1024621,2189311,4554744,9632597,19938907,

%U 41704600,86022324,177951143,365177921,746905649,1521061254,3075578686,6201375023

%N Number of strings of numbers x(i=1..n) in 0..2 with sum i^2*x(i)^3 equal to n^2*8

%C Column 2 of A184318

%H R. H. Hardin, <a href="/A184311/b184311.txt">Table of n, a(n) for n = 1..61</a>

%e All solutions for n=5

%e ..0....0

%e ..0....2

%e ..2....0

%K nonn

%O 1,4

%A _R. H. Hardin_ Jan 10 2011