Number of -3..3 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 eight distinct values for every i,j,k<=n.

A211750

Number of -3..3 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 eight distinct values for every i,j,k<=n.

Terms

    a(0) =48a(1) =238a(2) =990a(3) =3764a(4) =13830a(5) =49722a(6) =176928a(7) =629352a(8) =2235852a(9) =8002034a(10) =28683258a(11) =103771062a(12) =376062560a(13) =1374796560a(14) =5031081278a(15) =18549468152a(16) =68412809246a(17) =253875030476a(18) =941922579066

External references