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 one, two, three, four or five distinct values for every i,j,k<=n.

A211572

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 one, two, three, four or five distinct values for every i,j,k<=n.

Terms

    a(0) =25a(1) =69a(2) =177a(3) =427a(4) =1009a(5) =2339a(6) =5381a(7) =12315a(8) =28147a(9) =64367a(10) =147473a(11) =338895a(12) =781407a(13) =1808731a(14) =4202661a(15) =9803439a(16) =22952115a(17) =53927029a(18) =127112163a(19) =300515927a(20) =712369279a(21) =1692743195a(22) =4030861381a(23) =9616634755a(24) =22980554099a(25) =54994897249a(26) =131772223081

External references