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

A211726

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

Terms

    a(0) =48a(1) =118a(2) =254a(3) =516a(4) =1024a(5) =2002a(6) =3898a(7) =7562a(8) =14676a(9) =28484a(10) =55362a(11) =107750a(12) =210032a(13) =410146a(14) =802044a(15) =1571350a(16) =3082320a(17) =6056992a(18) =11914916a(19) =23476260a(20) =46297036a(21) =91432582a(22) =180706966a(23) =357595598a(24) =708081486a(25) =1403597900a(26) =2783755026a(27) =5526116978

External references