Number of 0..2 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.
A171308
Number of 0..2 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.
Terms
- a(0) =3a(1) =8a(2) =19a(3) =29a(4) =57a(5) =122a(6) =272a(7) =565a(8) =1199a(9) =2510a(10) =5218a(11) =10782a(12) =22794a(13) =48127a(14) =99220a(15) =202249a(16) =415900a(17) =855057a(18) =1747383a(19) =3572839a(20) =7297948a(21) =14809245a(22) =30091650a(23) =61043576
External references
- oeis: A171308