A184715 - OEIS

%I #5 Mar 31 2012 12:36:01

%S 1,1,2,2,6,22,125,467,1669,6070,22559,82566,297554,1051581,3645141,

%T 12437607,41861648,138913639,454992647,1471640292,4703510789,

%U 14860920840,46445544294,143657460676,439924290065,1334372714797,4010370283394

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

%C Column 4 of A184720

%H R. H. Hardin, <a href="/A184715/b184715.txt">Table of n, a(n) for n = 1..66</a>

%e All solutions for n=5

%e ..0....4....0....2....0....1

%e ..4....0....0....2....0....4

%e ..4....0....0....0....2....2

%e ..0....4....0....4....4....2

%e ..0....0....4....2....2....3

%K nonn

%O 1,3

%A _R. H. Hardin_ Jan 20 2011