Number of permutations of 1..n v[1..n] with all autocorrelation values sum(i){v[i]*v[i-k]} distinct for k in 0..n-1.
A171339
Number of permutations of 1..n 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) =22a(4) =118a(5) =656a(6) =4586a(7) =36656a(8) =332050a(9) =3326146a(10) =36615032a(11) =439501232a(12) =5741754786a(13) =80586187678
External references
- oeis: A171339