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%I #3 Mar 31 2012 12:35:37
%S 20,399,7923,154562,3095050,61897265,1232327939,24566356693,
%T 488948073586
%N Number of 0..19 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 20 of A171307.
%K nonn
%O 1,1
%A _R. H. Hardin_ Dec 06 2009
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