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, three, four, six or seven distinct values for every i,j,k<=n.

A211583

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, three, four, six or seven distinct values for every i,j,k<=n.

Terms

    a(0) =24a(1) =80a(2) =222a(3) =560a(4) =1392a(5) =3346a(6) =8024a(7) =19004a(8) =44796a(9) =105568a(10) =246694a(11) =581026a(12) =1352628a(13) =3191480a(14) =7423406a(15) =17570428a(16) =40904298a(17) =97193124a(18) =226680746a(19) =540902924a(20) =1264446486a(21) =3030265486a(22) =7101406744a(23) =17090819062a(24) =40152342862a(25) =97024689184

External references