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, six or eight distinct values for every i,j,k<=n.
A211753
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, six or eight distinct values for every i,j,k<=n.
Terms
- a(0) =36a(1) =186a(2) =804a(3) =2968a(4) =10092a(5) =32712a(6) =103184a(7) =323816a(8) =1008108a(9) =3181896a(10) =10019520a(11) =32241100a(12) =103445952a(13) =339993680a(14) =1110750880a(15) =3717193820a(16) =12320871456a(17) =41800702528a(18) =140023160932a(19) =479705387124
External references
- oeis: A211753