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 or eight distinct values for every i,j,k<=n.
A211589
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 or eight distinct values for every i,j,k<=n.
Terms
- a(0) =24a(1) =80a(2) =226a(3) =596a(4) =1536a(5) =3966a(6) =10192a(7) =26572a(8) =69102a(9) =182368a(10) =479844a(11) =1278318a(12) =3393724a(13) =9100172a(14) =24316814a(15) =65498292a(16) =175852800a(17) =475172186a(18) =1280321244a(19) =3467619648a(20) =9369009790a(21) =25419829164a(22) =68829542860a(23) =187003542158a(24) =507226552512
External references
- oeis: A211589