%I #5 Mar 31 2012 12:35:59
%S 1,1,3,28,146,1160,6805,38560,248861,1376999,7346823,40066933,
%T 205138785,1021202011,5016967826,23832660309,110581697393,
%U 503553260431,2240165792600,9769058509321,41836840405957,175853358107466
%N Number of strings of numbers x(i=1..n) in 0..8 with sum i*x(i)^2 equal to n*64
%C Column 8 of A184441
%H R. H. Hardin, <a href="/A184440/b184440.txt">Table of n, a(n) for n = 1..44</a>
%e Some solutions for n=5
%e ..1....0....3....5....0....1....1....5....4....8....7....3....4....7....0....3
%e ..5....8....2....1....8....1....2....7....4....2....8....4....6....2....4....1
%e ..6....8....3....4....4....8....7....4....8....1....3....1....4....7....3....4
%e ..3....0....8....0....4....0....6....6....0....0....3....7....1....3....8....8
%e ..5....0....2....7....4....5....2....1....4....7....4....4....6....4....1....1
%K nonn
%O 1,3
%A _R. H. Hardin_ Jan 14 2011