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 four, five, six or eight distinct values for every i,j,k<=n.

A211590

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 four, five, six or eight distinct values for every i,j,k<=n.

Terms

    a(0) =16a(1) =48a(2) =124a(3) =306a(4) =712a(5) =1682a(6) =3824a(7) =9010a(8) =20556a(9) =48942a(10) =112920a(11) =272310a(12) =635488a(13) =1549486a(14) =3649084a(15) =8971242a(16) =21265496a(17) =52582858a(18) =125191648a(19) =310754154a(20) =741987532a(21) =1846432766a(22) =4416892952a(23) =11009384758a(24) =26366956992a(25) =65790531678a(26) =157684077564

External references