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

A211724

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

Terms

    a(0) =36a(1) =66a(2) =104a(3) =178a(4) =280a(5) =476a(6) =768a(7) =1324a(8) =2208a(9) =3880a(10) =6672a(11) =11928a(12) =21008a(13) =38048a(14) =68144a(15) =124512a(16) =225456a(17) =414288a(18) =755312a(19) =1392784a(20) =2549872a(21) =4711856a(22) =8647920a(23) =16000432a(24) =29410032a(25) =54455152a(26) =100180464a(27) =185574000a(28) =341574128a(29) =632894192

External references