Number of -2..2 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, seven or eight distinct values for every i,j,k<=n.
A211598
Number of -2..2 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, seven or eight distinct values for every i,j,k<=n.
Terms
- a(0) =16a(1) =48a(2) =128a(3) =322a(4) =780a(5) =1874a(6) =4400a(7) =10458a(8) =24332a(9) =57922a(10) =134744a(11) =322650a(12) =753100a(13) =1815874a(14) =4256984a(15) =10332338a(16) =24326116a(17) =59383402a(18) =140337800a(19) =344230370a(20) =816065860a(21) =2009539410a(22) =4776207920a(23) =11798294714a(24) =28099290420a(25) =69585826082
External references
- oeis: A211598