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Number of strings of numbers x(i=1..n) in 0..4 with sum i^2*x(i)^3 equal to n^2*64
1

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

%S 1,1,1,2,2,5,16,68,244,1106,4041,15802,60716,234319,885466,3369738,

%T 12612488,47251424,174691216,644760884,2353213266,8557977690,

%U 30825999521,110546795278,393117952349,1390864413489,4884724958228,17059662985333

%N Number of strings of numbers x(i=1..n) in 0..4 with sum i^2*x(i)^3 equal to n^2*64

%C Column 4 of A184318

%H R. H. Hardin, <a href="/A184313/b184313.txt">Table of n, a(n) for n = 1..31</a>

%e All solutions for n=5

%e ..0....0

%e ..0....0

%e ..0....4

%e ..0....4

%e ..4....0

%K nonn

%O 1,4

%A _R. H. Hardin_ Jan 10 2011