Number of nX3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,3,0,1,2 for x=0,1,2,3,4.
A198008
Number of nX3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,3,0,1,2 for x=0,1,2,3,4.
Terms
- a(0) =2a(1) =12a(2) =51a(3) =182a(4) =753a(5) =3061a(6) =12503a(7) =51668a(8) =213279a(9) =880209a(10) =3634766a(11) =15007471a(12) =61961064a(13) =255823889a(14) =1056237984a(15) =4360961496a(16) =18005397659a(17) =74340087665a(18) =306933036933
External references
- oeis: A198008