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 or five distinct values for every i,j,k<=n.
A211723
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 or five distinct values for every i,j,k<=n.
Terms
- a(0) =48a(1) =94a(2) =162a(3) =294a(4) =508a(5) =922a(6) =1640a(7) =3032a(8) =5562a(9) =10484a(10) =19708a(11) =37718a(12) =72128a(13) =139540a(14) =269914a(15) =526084a(16) =1025412a(17) =2009038a(18) =3936456a(19) =7741548a(20) =15225514a(21) =30027724a(22) =59222348a(23) =117056558a(24) =231372240a(25) =458136788a(26) =907150906a(27) =1798879268a(28) =3567156212
External references
- oeis: A211723