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Number of 0..3 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
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%I #3 Mar 31 2012 12:35:37

%S 4,15,53,138,483,1678,5634,18915,62325,204315,683210,2277118,7559559,

%T 25132611,83206528,274465209,907716605,3004041236,9908081432

%N Number of 0..3 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 A171307.

%K nonn

%O 1,1

%A _R. H. Hardin_ Dec 06 2009