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, three, four, five, six or seven distinct values for every i,j,k<=n.
A211746
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, three, four, five, six or seven distinct values for every i,j,k<=n.
Terms
- a(0) =48a(1) =330a(2) =1764a(3) =7968a(4) =31786a(5) =117270a(6) =410460a(7) =1386380a(8) =4570334a(9) =14808240a(10) =47415150a(11) =150559236a(12) =475404140a(13) =1495840120a(14) =4696349418a(15) =14732952836a(16) =46209158636a(17) =145045251938a(18) =455701735566
External references
- oeis: A211746