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

A211597

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

Terms

    a(0) =24a(1) =80a(2) =246a(3) =716a(4) =2046a(5) =5782a(6) =16184a(7) =45312a(8) =126250a(9) =353302a(10) =986696a(11) =2770910a(12) =7777304a(13) =21945496a(14) =61932032a(15) =175572572a(16) =497905408a(17) =1417135306a(18) =4034892052a(19) =11520180346a(20) =32901609502a(21) =94162093264a(22) =269546074004a(23) =772772054834

External references