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

A211742

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

Terms

    a(0) =36a(1) =170a(2) =576a(3) =1670a(4) =4536a(5) =12082a(6) =31600a(7) =83854a(8) =221472a(9) =599922a(10) =1621564a(11) =4502630a(12) =12452416a(13) =35319066a(14) =99465560a(15) =286641046a(16) =817809640a(17) =2383330298a(18) =6860877784a(19) =20149044846a(20) =58354995188a(21) =172280429034a(22) =501001658620

External references