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 one, two, three, four or five distinct values for every i,j,k<=n.
A211727
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 one, two, three, four or five distinct values for every i,j,k<=n.
Terms
- a(0) =49a(1) =131a(2) =311a(3) =719a(4) =1627a(5) =3679a(6) =8283a(7) =18713a(8) =42325a(9) =96169a(10) =219263a(11) =502397a(12) =1156113a(13) =2673435a(14) =6209225a(15) =14485465a(16) =33927541a(17) =79766671a(18) =188169795a(19) =445268391a(20) =1056497233a(21) =2512864191a(22) =5989377967a(23) =14302062153a(24) =34206279091a(25) =81924562803
External references
- oeis: A211727