Number of 1..n integer arrays v[1..3] of length 3 with all autocorrelation values sum(i){v[i]*v[i-k]} distinct for k in 0..2.
A171340
Number of 1..n integer arrays v[1..3] of length 3 with all autocorrelation values sum(i){v[i]*v[i-k]} distinct for k in 0..2.
Terms
- a(0) =1a(1) =7a(2) =26a(3) =62a(4) =123a(5) =211a(6) =338a(7) =506a(8) =723a(9) =993a(10) =1324a(11) =1716a(12) =2185a(13) =2731a(14) =3360a(15) =4080a(16) =4897a(17) =5813a(18) =6840a(19) =7978a(20) =9239a(21) =10625a(22) =12144a(23) =13796a(24) =15597a(25) =17547a(26) =19654a(27) =21920a(28) =24357a(29) =26961
External references
- oeis: A171340