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 two, four, five, six or seven distinct values for every i,j,k<=n.
A211743
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 two, four, five, six or seven distinct values for every i,j,k<=n.
Terms
- a(0) =48a(1) =306a(2) =1264a(3) =4014a(4) =11374a(5) =30422a(6) =78284a(7) =199102a(8) =499810a(9) =1264496a(10) =3193024a(11) =8209318a(12) =21162622a(13) =55829010a(14) =147730098a(15) =400702654a(16) =1087655474a(17) =3024984632a(18) =8389557884a(19) =23809669192a(20) =67140377402a(21) =193464704214a(22) =552197517234
External references
- oeis: A211743