%I #3 Mar 31 2012 12:35:36
%S 4,16,62,240,914,3508,13297,50461,191050,722932,2726415,10295319,
%T 38671908,146751022,550500089,2073212701,7808201806,29400052201,
%U 110000818929
%N Number of 1..4 integer arrays v[1..n] of length n with all autocorrelation values sum(i){v[i]*v[i-k]} distinct for k in 0..n-1
%C column 4 of A171275.
%K nonn
%O 1,1
%A _R. H. Hardin_ Dec 06 2009