Number of -2..2 arrays x(i) of n+1 elements i=1..n+1 with set{t,u,v in 0,1}((x[i+t]+x[j+u]+x[k+v])*(-1)^(t+u+v)) having two, four, five, six or eight distinct values for every i,j,k<=n.

A211591

Number of -2..2 arrays x(i) of n+1 elements i=1..n+1 with set{t,u,v in 0,1}((x[i+t]+x[j+u]+x[k+v])*(-1)^(t+u+v)) having two, four, five, six or eight distinct values for every i,j,k<=n.

Terms

    a(0) =24a(1) =108a(2) =342a(3) =986a(4) =2600a(5) =6776a(6) =17064a(7) =43310a(8) =108434a(9) =274934a(10) =693672a(11) =1773284a(12) =4527672a(13) =11702070a(14) =30251214a(15) =79047138a(16) =206675020a(17) =545332484a(18) =1439676080a(19) =3829694670a(20) =10190585358a(21) =27284478782a(22) =73058107616a(23) =196594473356

External references