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 seven distinct values for every i,j,k<=n.

A211585

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 seven distinct values for every i,j,k<=n.

Terms

    a(0) =24a(1) =108a(2) =350a(3) =962a(4) =2458a(5) =5996a(6) =14108a(7) =32866a(8) =74604a(9) =170544a(10) =381234a(11) =866296a(12) =1927712a(13) =4384998a(14) =9772806a(15) =22344402a(16) =50050666a(17) =115292422a(18) =260040134a(19) =604224496a(20) =1373323994a(21) =3220149132a(22) =7375767952a(23) =17449609076a(24) =40261731480a(25) =96052427846

External references