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

A211736

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

Terms

    a(0) =49a(1) =343a(2) =1421a(3) =4551a(4) =13555a(5) =39169a(6) =111793a(7) =322077a(8) =933135a(9) =2752147a(10) =8199745a(11) =24862257a(12) =76130649a(13) =236603551a(14) =741329977a(15) =2350346441a(16) =7498037945a(17) =24138736345a(18) =78063226797a(19) =254189827701a(20) =830340918003

External references