Number of 0..n-1 integer arrays v[1..4] of length 4 with all autocorrelation values sum(i){v[i]*v[i-k]} distinct for k in 0..3.
A171355
Number of 0..n-1 integer arrays v[1..4] of length 4 with all autocorrelation values sum(i){v[i]*v[i-k]} distinct for k in 0..3.
Terms
- a(0) =0a(1) =3a(2) =29a(3) =138a(4) =412a(5) =963a(6) =1897a(7) =3414a(8) =5662a(9) =8853a(10) =13207a(11) =19016a(12) =26436a(13) =35943a(14) =47737a(15) =62166a(16) =79670a(17) =100665a(18) =125401a(19) =154562a(20) =188356a(21) =227455a(22) =272369a(23) =323674a(24) =381628a(25) =447221a(26) =520887a(27) =603240a(28) =694910a(29) =796825
External references
- oeis: A171355