Number of permutations of 0..n-1 v[1..n] with all autocorrelation values sum(i){v[i]*v[i-k]} distinct for k in 0..n-1.
A171338
Number of permutations of 0..n-1 v[1..n] with all autocorrelation values sum(i){v[i]*v[i-k]} distinct for k in 0..n-1.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =24a(4) =104a(5) =622a(6) =4324a(7) =34548a(8) =310594a(9) =3164990a(10) =35155038a(11) =423974396a(12) =5541016736a(13) =78238104000
External references
- oeis: A171338