A171294 - OEIS

A171294

Number of 1..20 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

%I #3 Mar 31 2012 12:35:36

%S 20,400,7978,158720,3167712,63133961,1257532904,25067835333,

%T 499409248793

%N Number of 1..20 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 A171275.

%K nonn

%O 1,1

%A _R. H. Hardin_ Dec 06 2009