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 three, four, five or six distinct values for every i,j,k<=n.
A211733
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 three, four, five or six distinct values for every i,j,k<=n.
Terms
- a(0) =36a(1) =186a(2) =620a(3) =1780a(4) =4840a(5) =13108a(6) =34968a(7) =95300a(8) =258084a(9) =715112a(10) =1970400a(11) =5539668a(12) =15468616a(13) =43974160a(14) =123983696a(15) =355470488a(16) =1009507724a(17) =2914043384a(18) =8322676556a(19) =24159321760a(20) =69319250572a(21) =202175077828a(22) =582318461756
External references
- oeis: A211733