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, three, four, five, six or eight distinct values for every i,j,k<=n.
A211593
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, three, four, five, six or eight distinct values for every i,j,k<=n.
Terms
- a(0) =17a(1) =61a(2) =189a(3) =537a(4) =1405a(5) =3605a(6) =8909a(7) =22093a(8) =53669a(9) =131917a(10) =319837a(11) =786941a(12) =1915309a(13) =4734125a(14) =11587605a(15) =28797317a(16) =70895933a(17) =177097381a(18) =438296237a(19) =1099734997a(20) =2734106629a(21) =6885392301a(22) =17183667245a(23) =43402287421a(24) =108663538381a(25) =275107471725
External references
- oeis: A211593