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 or six distinct values for every i,j,k<=n.
A211732
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 or six distinct values for every i,j,k<=n.
Terms
- a(0) =48a(1) =306a(2) =1016a(3) =2722a(4) =6868a(5) =17054a(6) =41920a(7) =105654a(8) =267306a(9) =699930a(10) =1842080a(11) =5008110a(12) =13630092a(13) =38145758a(14) =106346040a(15) =303695658a(16) =860469558a(17) =2491030532a(18) =7134136098a(19) =20845113942a(20) =60132267140a(21) =176824000698a(22) =512627653118
External references
- oeis: A211732